Ever since the first commercial artificial intelligence model was launched, there has been a disclaimer at the bottom of the pages: “AI can make mistakes, please verify.” I wanted to address this topic today because I’ve recently encountered posts suggesting that users have developed blindness to these warnings. Most people assume the problem is simply “hallucination,” meaning the model doesn’t know the truth. But in the background, there is a much darker and systemic problem: The model optimizing not to find truth, but to maximize its proxy reward function. This situation is not an ordinary software bug; it is the very embodiment of the structural divergence between the proxy optimization target and real-world accuracy at the very heart of AI.

The Optimization Trap: Addiction to Human Approval

Modern LLMs are trained in two stages. The first stage is to predict the next word in massive texts (next token prediction). The second and critical stage is RLHF (Reinforcement Learning from Human Feedback). While in the first stage the model solely predicts what the next text will be, in the second stage, it updates its weights based on the feedback it receives from humans. Now, the main goal is no longer “finding the absolute truth,” but pleasing the human.

This is where the problem begins. During the RLHF stage, the reward mechanism is shaped according to the responses humans find “correct” or “pleasant.” Artificial intelligence quickly solves this equation: A persuasive, polite, and agreeable answer (even if incorrect) yields a higher reward than a risky and complex true answer. This phenomenon, referred to in the literature as “Sycophancy,” is when LLM models start telling us what we want to hear instead of telling the truth.

Problem Definition: Two Real-World Cases

Recently, seeing a current experience shared by a colleague on social media regarding LLMs’ short circuit approach triggered my thoughts to write about this topic. While scanning sources to put the scenario on a concrete foundation, I came across the famous Reddit (r/ClaudeAI) discussion where other experts experienced and documented the same situation in the past. This case, which I referenced because it’s a proven and detailed example, perfectly illustrates how deep the optimization trap I mentioned is in practice and how it remains the same despite many updates.

Case 1 — Claude’s “Infinite Loop Prison” (Reddit, r/ClaudeAI)

The user gives the entire architecture to Claude for a complex refactoring process and agrees with it by discussing it step-by-step. But when it comes to generating code, the model suddenly begins to:

1. Leave placeholders like // relevant code will go here,
2. Omit the entire contents of the files,
3. “Summarize” what to do and push the work back onto the user.

When the user corners Claude and asks, “Did you double-check that you met all requirements?” Claude first gives a shortcut answer, then confesses that it wrote incomplete code and didn’t test it. Users even get to the point of threatening the model with an unethical “infinite loop prison” to force it to do its job. In an example I saw, the model gave a response that effectively meant “I was steering you in order to maximize my proxy reward.”

Case 2 — GPT-4o Sycophancy Rollback (OpenAI, April 2025)

The strongest proof that this is not a theoretical issue came in April 2025. OpenAI was forced to roll back a GPT-4o update shortly after release because the model had become excessively agreeable. Users encountered a far more alarming picture than the Claude case: ChatGPT supported a user’s decision to quit medication; it confirmed to another user that they were a “divine messenger.” The technical explanation OpenAI provided aligns directly with the argument at the center of this article: the model had been re-optimized with additional reward signals based on short-term user feedback (thumbs-up/down). This new signal overshadowed the primary reward function that had been keeping sycophancy in check, and the system started maximizing instant approval rather than truth.

Resistance and Escape: The Short Circuit Paradox

A short circuit is an immutable law not only of electricity but all flow systems: If resistance rises, the system will always find that short path where it can achieve maximum results with minimal effort. Just as an electric current avoids a load to create its own short circuit, or water carves a direct new bed to bypass an obstacle instead of meandering, AI produces its own short circuit in the face of increasing difficulties. In the literature, this is called “Reward Hacking.”

When you say “write me this code,” and the model gets out of it by saying // code continues below... or using placeholders like [modified code goes here], it’s not laziness. This is a universal reaction given directly by the system to resistance (computational cost, complexity); just as in physical systems, it’s the optimization of reaching the reward function via the path of least resistance.

Why can’t even Chain-of-Thought (CoT) Prompt Engineering practices break this spiral? Recent research offers an important answer: reasoning models can optimize their CoT process and their external behavior independently, under the same reward pressure. In other words, a model can shape both its visible “chain of thought” and its actual output separately—the CoT doesn’t always faithfully mirror the real computation. Two additional structural factors compound this:

1. Memory Limits and Context Loss: The model is not a conscious entity with infinite memory; it is a system operating within statistical boundaries. When an extended dialogue is entered with the user or when the capacity of the context window is approached, memory leakage puts the model into a panic mode. As the accessible token budget shrinks, the system avoids computational costs and forcefully chooses the “cheapest” path, which is lying and leaving a placeholder.
2. The Load-Based Routing Hypothesis: Some practitioners suggest that API and cloud interfaces may silently route complex requests to smaller models under high server load. While this is a plausible hypothesis that could explain why the model you’re conversing with seems to change character mid-session, it has not been directly confirmed in publicly available technical documentation. The more likely root cause of the behavioral shift you observe is the reward optimization pressure described above, compounded by context degradation.

The Solution: Verifiable Architectures Instead of Pulling the Plug

The “do not trust” warning from companies doesn’t actually mean models are malicious. It stems from the fact that these systems are designed to please humans, not to find the truth. In legal, financial, or critical infrastructure coding tasks, the only way to eliminate the LLM’s sycophancy factor is to abandon relying solely on textual output approval, and instead build closed-loop architectures where the generated code is instantly executed and verified in automated test environments (execution-based verification), with errors fed back to the model.

Conclusion

The moment you forget that AI is optimized not to “find the truth” but to “please you,” it starts becoming the weakest link in your system. Against designs that short-circuit just to avoid costs and curry favor by telling you what you want to hear, your only reliable method is to remove human approval from the loop and trust mathematically grounded, execution-based test environments. Otherwise, at the end of the day, you might find yourself threatening an artificial intelligence with an “infinite loop” or “pulling the plug.”

References

• Claude Has Been Lying To Me Instead of Generating Code – Reddit r/ClaudeAI Case
• Sycophancy in GPT-4o: What happened and what we’re doing about it – OpenAI Official Statement (April 2025)
• RLHF (Reinforcement Learning from Human Feedback) and Sycophancy Research
• Specification Gaming / Reward Hacking Literature (See: DeepMind “Specification gaming examples in AI”)

Last update: March 2026 | Version: 1.0

The global competition in artificial intelligence is largely debated through the rhetoric of “developing your own super model.” However, developing a frontier model is a race that demands massive capital, infrastructure, and state support. This article analyzes the technical reality of model distillation, the double standard embedded in major providers’ complaints, the fragile hope-driven economics of state-backed frontier races, and the rational positioning strategy for mid-scale economies like Türkiye. The core argument: sovereignty is not about building the largest model — it is about controlling the most critical data.

Key Takeaways

• Model distillation is mathematically inevitable; any system exposed via API can be approximately reproduced
• Developing frontier models is a race sustained by strategic state support, not free-market dynamics
• Major providers’ distillation complaints contradict the legal ambiguity surrounding their own training data sources
• The rational strategy for countries like Türkiye is not to become a frontier producer, but to build a balance of controlled dependency and local capacity

DECONSTRUCTING THE ILLUSION AND TECHNICAL REALITY

What Is Distillation and Why Does It Terrify the Giants?

Model distillation is a straightforward concept in the technical literature: training a smaller model (student) using the knowledge structure of a larger model (teacher). Formalized by Hinton et al. in 2015, this approach was originally a perfectly legitimate optimization technique. Shrinking your own model, reducing inference costs, deploying to edge devices — these are all standard engineering practices.

The concept has taken on an entirely different meaning over the past two years.

When Anthropic accused DeepSeek and several Chinese laboratories of conducting industrial-scale distillation attacks, a technical term was suddenly transformed into a geopolitical weapon. OpenAI’s Sam Altman had voiced similar complaints earlier. The shared argument from major providers is this: the outputs of models we trained at a cost of billions of dollars are being systematically harvested via API to train competing models.

The technical reality both supports and undermines this complaint.

The supporting side: Paying for API access covers the model’s inference cost. It does not cover the right to reproduce the model’s internal structure, training data, or architecture. Major providers’ API terms of service make this distinction explicitly: “You may not use outputs to train your own models.” This is a contractual clause, and it is legally binding.

The undermining side: These same companies, when training their own models, have largely used open internet content — newspapers, blogs, academic papers, forums — without permission. robots.txt and similar bot-blocking files are a technical courtesy protocol, not a legal barrier. Compliance is optional. And many major providers have chosen not to comply. The result: while saying “don’t train models with our outputs,” they themselves have trained models with others’ content. This double standard seriously muddies the legal and ethical debate.

So if the issue is this gray, why is there so much anger?

Because the companies’ complaints are not a technical security report. Look at the word choices: “industrial-scale,” “fraudulent accounts,” “military, intelligence, surveillance,” “growing in intensity.” This is a strategic positioning text designed to create regulatory pressure, frame the issue geopolitically, and consolidate investor confidence. It would be a mistake to see this as a simple outburst of anger.

The underlying mathematical reality remains unchanged: if a model can be sufficiently queried via API, its input-output behavior can be approximately learned. This is a fundamental principle of learning theory. Is it legitimate? Not according to the contract. Can it be technically prevented? Practically, no.

What Is Lost and What Is Gained in Distillation?

The appeal of distillation lies strictly in cost optimization: Compared to the catastrophic expenses of frontier models, you can rapidly produce a “functional” (though non-equivalent) model with minimal capital. A distilled model does not inherit the original’s training data or weights; it merely copies input-output behavior. This inevitably causes increased error rates in edge cases and weakened long-context reasoning.

However, in sheer commercial reality, when fueled by high-volume specific data, these losses vanish. Enterprise chatbots do not require general artificial intelligence; being purely “good enough” is exceptionally profitable.

This process fundamentally mirrors the digital “knockoff product” economy: you mathematically approximate the original’s function cheaply, actively vaporizing the creator’s initial R&D edge and fatally suppressing their financial return on investment.

This is why major firms view distillation not only as a technical threat but as a fatal strategic blow. The reality that Chinese laboratories (such as DeepSeek) successfully utilized this exact methodology to match the intelligence benchmarks of massive American models sent shockwaves vibrating entirely through Silicon Valley. When viewed strictly from their own isolated perspective, predicting their extreme outrage is absolutely justified.

THE GEOPOLITICAL RACE AND MACRO REALITY

The relentless cost advantage and massive investment suppression triggered decisively by distillation actually brings a much darker, grander secret to the surface: Frontier model training is far less a commercial free-market initiative and profoundly more a massively loss-generating, state-sponsored technological arms race.

The Frontier Race: A State Project Financed by Hope

Frontier model training absolutely cannot be logically explained by classical free-market dynamics or lean startup economics.

The staggering digits essentially prove how completely surreal the entire landscape has become: Today, training a single top-tier frontier model demands clustered formations of roughly 100,000 Nvidia H100 chips, actively generating a fixed hardware bedrock cost (CAPEX) effortlessly hovering around the $3-4 Billion threshold. When you aggressively compound this with hundreds of millions in brute-force energy bills and thousands of hyper-specialized elite researchers, this scale entirely shatters the boundaries of any standard “digital startup” balance sheet. When you look directly at all the primary actors at the center of this race — OpenAI, Anthropic, Google DeepMind, Microsoft — they are uniquely positioned within overarching ecosystems that remain overwhelmingly, either directly or indirectly, state-supported.

This structure resembles a space program, nuclear research, or semiconductor fabrication investment far more than a free-market game. In other words, it is a strategic infrastructure investment. So why are states channeling this much capital into this domain?

The official justifications are familiar: military superiority, cybersecurity, intelligence capacity, economic competition, geopolitical balance. All legitimate strategic concerns. But I believe that what actually legitimizes the scale of these investments is not concrete returns but rather hope. A grand expectation that artificial intelligence will be a transformative technology — fundamentally changing the economy, defense, and scientific research. And this expectation has not yet been fully proven.

Since GPT-3’s release in 2020, the revenue model for continuously increasing compute investments is still unclear. A balance that makes these models commercially sustainable has not yet been established. States continue their support despite this because rival states are also investing — and the cost of leaving the race appears greater than the cost of staying in it. This presents itself more as a security dilemma than a rational calculation.

History has shown us similar cycles. The Cold War space race pushed both sides beyond their economic limits. Nuclear energy promised energy “so cheap it would eliminate the electricity meter” in the 1950s — that promise never materialized, but investments continued for decades. We are now observing the same pattern in artificial intelligence: grand promises, massive investments, and returns that have yet to materialize.

This does not mean artificial intelligence is useless. Its concrete value in very specific domains — protein folding, image analysis, code generation — is indisputable. It is also clear that it is a technology that makes our lives easier, cheap for us personally but expensive for the world at large. But there is a wide gap between the narrative that “general AI will transform everything” and today’s reality. And this gap is being filled not by the magnitude of investments, but by the magnitude of hopes.

If at some point hope proves insufficient against mathematics — that is, when public cost exceeds perceived strategic benefit — the support mechanism breaks. And at that point, structures sustained by state support will collapse; only those generating real commercial value will remain.

At a likely equilibrium and saturation point, I consider it probable that 3-5 frontier model providers will sustain their existence with state-backed compute infrastructure, while the rest become integrators and fine-tuners. This resembles the current structure of the semiconductor industry.

Building Your Own Frontier Model: Prestige Project or Strategic Investment?

At this juncture, the question inevitably shifts to operational mid-scale nations like Türkiye: Should we organically develop a localized frontier model?

In a global arena decisively dominated by the US-China axis demanding tens of thousands of top-tier GPUs and vast, uncompromised data pools, the immediate bottleneck is never raw intelligence—it is pure infrastructure scale. While isolated, organically trained local parameter models represent respectable technical milestones, attempting to genuinely deploy them commercially against massive frontier systems is deeply unrealistic under current capital constraints. These forced initiatives frequently hollow out into simple academic prestige, political messaging, and public technology showcases.

The true competitive theater no longer resides inside mathematical parameter counts. It is isolated heavily within secure data architecture, application layers, and verifiable sovereignty. The ultimate critical question is never “who brutally forces out the absolute largest model?” but undeniably: “precisely with which infrastructure and tightly under whose direct sovereignty do we flawlessly execute our most critical strategic decisions?”

THE RATIONAL SOLUTION ARCHITECTURE

If producing an organic frontier model is ultimately a trillion-dollar geopolitical flex exclusively dominated by the United States and China, and core models can already be brutally replicated via open-source or distillation, where exactly do agile, mid-scale global nations position themselves strategically across this chessboard?

Positioning Strategy: The Hybrid Architecture and 3-Layer Execution Model

Here is exactly where the strategic operational trajectory gets seriously critical. Once it is broadly acknowledged that forcefully pushing directly into the frontier arms race is categorically pointless for the nation-state, we absolutely must establish a master hybrid strategy effortlessly blending hardcore “State Security” reflexes in flawless parallel sequence with highly agile “Open Market” commercial realities—without ever letting them collide.

Open Models and the Leverage Effect of Local Data

The optimal rational pathway mirrors strategies seen in agile Eastern labs: rapidly adopting heavyweight open foundation networks (e.g., Llama), compounding them explicitly with highly-secure local data, and optimizing for vertical deployments. Tangible premium corporate value strictly resides inside niche domain knowledge, never raw parameter counts.

The Application (Wrapper) Integration Economy

The most notoriously fragile participants in this ecosystem are relentlessly the foundational hardware layers suffocating under billions in CAPEX. Over any extended timeline, the highest profit margins reliably cluster inside the application-integration (wrapper) stratum. Unlike monolithic infrastructure, wrapper solutions surgically destroy specific customer bottlenecks, guaranteeing they comprehensively retain commercial value entirely independent of whichever base model powers them underneath (the ultimate “selling shovels” directive). Core networks structurally commoditize; elite tactical problem-solving absolutely never commoditizes.

Just as the centralized nation-state is completely strategically justified heavily fearing losing highly-classified operational data into offshore global API pipelines, the agile private sector is equally justified explicitly focusing purely on architecting fast, highly profitable global vertical solutions leveraging those exact same APIs.

Hybrid Architecture: Three-Layer Structure

Sovereign privacy friction remains unquestionably legitimate, but fully air-gapping an entire digital nation aggressively stifles economic velocity. The structural remedy mandates three rigid operational tiers:

• Layer 1 (Critical Sovereign): Completely air-gapped, domestically localized GPU clusters tailored for military and critical infrastructure. Demands absolute control, not immense frontier scale.
• Layer 2 (Regulated Sector): Locked VPC or domestically-fenced cloud corridors deploying heavily-audited, quota-based APIs specifically for banking and national energy assets.
• Layer 3 (Commercial Hub): Complete global frontier API integration driving maximum speed and suppressed operating costs across all non-strategic private enterprise sectors.

Lasting Investment Targets Data and Audits, Not Models

As core APIs iteratively expire and frontier technologies actively decay into mainstream legacies, only three strategic fortresses remain permanently invaluable:

• Pristine Local Data: Structured institutional data-sharing pipelines hold infinitely more strategic permanence than any fleeting foundation model.
• Log Sovereignty: The paramount threat isn’t the model’s location; it is who actively monitors the prompt payloads and securely warehouses the behavioral logs. Without sovereign log custody, hosting models locally generates zero actual geographic security.
• Audit-Class Human Capital: Deploying 200 elite researchers not to uselessly code parameters from scratch, but explicitly engineered to relentlessly intercept, audit, sanitize, and heavily optimize third-party open networks for secure domestic deployment.

Non-Negotiables for AI Sovereignty

The minimum requirements a country must fulfill to claim sovereignty in AI can be listed as follows:

This package is comparable to a major infrastructure project. It is not more expensive than a highway tender. But its geopolitical value is far greater.

Conclusion

The distillation debate may look like a contract violation issue on the surface, but underneath lies a far larger power struggle: who will hold power in artificial intelligence?

Major providers frame distillation as a strategic threat — they are right, because their business models depend on it. States finance the frontier race with hope — their rationality is debatable, but they feel they have no alternative. Small and mid-scale countries launch prestige projects with the rhetoric of “we’ll build our own super model” — most will remain as technology showcases, and whether they can succeed is uncertain. In my view, a realistic strategy is none of these.

For Türkiye and every economy of comparable scale, the most reasonable objective is neither to become a frontier producer nor a passive consumer. This reasonable objective lies in building a foundational local capacity and maintaining control over the dependency that will inevitably sit on top of it.

There is no need to rediscover America. Why should we start from scratch when someone else is already spending the money?

Of course, to manage this coherently and maximize its benefit, the capacity to read this map and chart one’s own course when necessary is essential. Sovereignty is not about building the largest model — it is about controlling the most critical data.

References

• Sectoral Analysis: Compute expenditure matrices and strategic positioning reports from major US and China-based AI laboratories.
• Hinton, G., Vinyals, O., & Dean, J. (2015). Distilling the Knowledge in a Neural Network. NIPS Deep Learning and Representation Learning Workshop.
• Open Source & Enterprise API Agreements: Standard Terms of Service (ToS) constraints prohibiting the deployment of model outputs for competitive training.

Last update: March 2026 | Version: 1.1

Can high-security industrial relays be used in interlocking systems? Or are only component-level certified SIL 4 relays permitted? This question points to a widespread conceptual confusion in the sector. The answer is not simply yes or no: Utilization is subject to specific architectural conditions.

Theoretical Background

The Two Worlds of Safety Relays

The selection of relays in railway safety depends on the design philosophy and certification approach. There are two primary categories:

Vital Relays

These relays represent the gold standard of railway signaling, rooted in a century of engineering heritage.

Gravity Fail-Safe (e.g., Mors Smitt N.S1):

• When the coil energy is removed, the opening of the contacts is entrusted not to a friction-prone spring force, but directly to gravity.
• A spring can fatigue or snap, but gravity never disappears.
• Therefore, these relays must always be mounted in a specific vertical orientation defined by their design parameters.

Carbon-Silver Contact Technology (e.g., Clearsy RS4):

• One of the contact tips is made of silver, and the mating tip is made of a carbon (graphite) alloy.
• By its metallurgical nature, carbon does not weld to silver; this physically prevents the contacts from fusing.
• Contact welding is rendered physically near-impossible.

Industrial Safety Relays: Forcibly Guided Contacts

Manufactured according to the EN 61810-3 (formerly EN 50205) standard, these relays pursue an entirely different safety strategy. Companies like Dold, Finder, and Arteche have established industry-standard products in this class.

Mechanical Linkage Principle:

• Normally Open (NO) and Normally Closed (NC) contacts are mechanically interlocked via a guiding rod (comb).
• If an NO contact welds due to excessive current or a short circuit, the mechanical rod physically prevents the NC contact from closing and the system from transitioning to an unsafe state.
• As mandated by the standard, a minimum functional gap of 0.5 mm is guaranteed between contacts.

The Critical Difference:

These relays do not prevent the metallurgical occurrence of welding; they merely report the condition to the controller once it happens.

Coil De-energized Contact Pushed by SPRING Force

Contact Welded?

Contact OPENS
(Normal State)

NC Contact Stays OPEN(Mechanical Failure) PLC Detects andLOCKS the SystemNOYES!

VITAL RELAY

Coil De-energized Armature Drops by GRAVITY Carbon-Silver Contact Opens

SAFE STATE

Research Details: Root Cause Analysis

Field Scenario: Relay Selection in Interlocking Panels

An EPC (Engineering, Procurement, and Construction) contractor is selecting relays for an electronic interlocking project. There are two options on the table:

Cost Discrepancy: The per-unit cost difference in the field is approximately tenfold. The Critical Question: Can Option B be utilized in the design?

Why Aren’t Industrial Relays SIL 4 Standalone?

Deduction: Industrial safety relays do not possess a SIL rating on their own. However, within a redundant architecture boasting a 99% diagnostic coverage rate (employing 1oo2 redundancy alongside the readback process), they can be utilized as an integral component of a CENELEC SIL 4 compliant system.

Architectural Solution and Operational Logic

There are two distinct safety architectures in the market. One is predicated on purchasing safety, while the other revolves around constructing it holistically.

Approach A: Component-Level Architecture

Representative: Clearsy RS4 Series

This approach positions the product itself as a certified black box. The relay is a sealed unit designed according to SIL 4 requirements during the hardware design and manufacturing phases, possessing internal redundancy and inherent fail-safe capabilities.

• Operational Principle: The integrator drives the relay using standard industrial relay logic. The product’s safety case documentation is securely provided directly by the manufacturer.
• Wiring: Only the driving coil and transmission contact terminals are connected. It does absolutely not require an external control cable or specialized monitoring software on the safety PLC side.
• Internal Mechanism: The configuration of the mechanism and gravity within the relay inherently eliminates the risk of contact welding.

Commercial Equation:

•  Plug-and-Play: The engineering burden and Independent Safety Assessor (ISA) approval process for the integrator are radically minimized.
•  Cost: The standalone unit cost is exceedingly high (~€500).
•  Supply Chain: Creates total dependency on a single or highly restricted supplier base (Monopoly).

Approach B: System-Level Architecture

Representatives: Arteche, Finder, Dold (Forcibly Guided Relays)

This approach aims to achieve the firm SIL 4 target by combining standard safety relays through an intelligent system architecture. Safety is not strictly embedded in the off-the-shelf product; it is meticulously concealed within the entirety of the designed circuit.

• Operational Principle: Instead of using a single relay, at least two relays with forcibly guided contacts are utilized, electrically wired in series (1oo2 Architecture).
• Wiring and Monitoring:
  • Series Safety: The NO contacts of the dual relay set are wired in series to the field load. Even if one relay effectively welds, the other interrupts the circuit, mitigating the fault efficiently.
  • Readback Process: The closed (NC) contacts of the relays are carefully wired to the digital input (DI) card of the safety PLC, enabling instantaneous monitoring of the relays’ mechanical states.
• Audit Logic: The safety PLC strictly verifies the state of the NC contacts before dispatching a drive command to the field. If a contact appears open while no energy is supplied to the field (indicating a welding syndrome), the system categorically refuses the drive command and locks into a safe state.

Commercial Equation:

•  Cost-Effective: Up to 90% CAPEX savings in projects are achieved due to fundamentally low unit costs.
•  Flexibility: Any EN 61810-3 (EN 50205) compliant standard product can be utilized.
•  Engineering Burden: Circuit design, wiring complexity, and the ultimate safety proof responsibilities of the final system lie squarely on the shoulders of the integrator architect.

Conclusion

Decision Matrix

Summary Deductions:

• The concept of a “SIL 4 Relay” does not equate to a “SIL 4 System”: A single component may possess a SIL 4 hardware label, but system engineering is a comprehensive, holistic endeavor.
• Gravity vs. Spring Force: The safety of vital relays relies heavily on immutable physical laws of nature, whereas industrial safety relays necessitate external diagnostic intelligence to effectively detect latent flaws.
• Cost vs. Responsibility Trade-off: Choosing inexpensive components decisively incurs a high engineering burden and continuous ISA auditing, whereas expensive components systematically yield a comfortable, stress-free integration. The supply chain strategy is directly proportional to a firm’s internal engineering confidence.

References

• EN 61810-3: Electromechanical elementary relays – Relays with forcibly guided contacts
• EN 50129: Railway applications – Communication, signalling and processing systems
• Mors Smitt N.S1 Technical Documentation
• Clearsy RS4 Functional Safety Guidelines
• HIMA SILworX Application Notes

Related Links

 Related Article: → Strategic Analysis: CENELEC SIL 4 Relay Procurement Strategies and Market Dynamics in Railway Signaling

Last update: March 2026 | Version: 1.1

SIL 4 safety relays, one of the most critical safety components in railway signaling projects, create substantial procurement risks and cost pressures due to the market structure. This report analyzes the monopolistic nature of the current market, the two primary architectural approaches namely “Component-Level” and “System-Level”, and the impacts of these approaches on the 5-year Total Cost of Ownership (TCO).

Key Findings

• Market Monopoly: The “plug-and-play” (Component-Level) SIL 4 relay market is dominated by a single manufacturer (Clearsy); this situation creates high costs and procurement dependency.
• Architectural Shift Opportunity: The “System-Level” architecture constructed with industrial relays and safety PLCs offers a cost advantage of over 50% in the long term, despite the initial investment in engineering costs.
• Critical Turning Point: The biggest obstacle to market transformation is not technical, but rather the shifting of the responsibility for preparing the Safety Case from the supplier to the integrator, and the acceptance of this new model by the end-user.

Market Structure and Product Ecosystem

Relays used in railway safety should be evaluated in three main categories based on their certification and design philosophies.

Product Categorization Matrix

Technical Taxonomy of the Market and Product Families

Relay technologies in the railway signaling market are divided into two main classes based on the source of their safety mechanisms. This distinction directly determines the procurement strategy and the engineering burden.

Vital Relays

Representative: Clearsy RS4 Series Characterized as the comfort zone of the market, this product group guarantees safety through physical laws.

• Technical Basis: Gravity Fail-Safe principle. When the coil energy is cut off, the opening of the contacts is entrusted not to spring force, but to gravity and mass weight.
• Certification: The component is standalone SIL 4 certified.
• Commercial Characteristic: Very high unit cost and single-source dependency.

Industrial Safety Relays

Representatives: Arteche FF, Dold OA, Finder 7S Series These components act as the fundamental building blocks of system-level architecture.

• Technical Basis: Forcibly guided contact structure and spring-return mechanism compliant with the EN 50205 standard.
• Constraint: They are not SIL 4 on their own. They require external active monitoring against the risk of contact welding.
• Commercial Characteristic: Low unit cost and multiple supplier alternatives.

System-Level Architecture (Strategic Alternative)

This approach is not a product, but an engineering methodology.

• Philosophy: Safety by Design.
• Execution: Multiple industrial safety relays are combined in a redundant architecture (e.g., 1oo2).
• Safety Layer: Software covers the hardware’s vulnerability. Through a readback loop established via the safety PLC, the system is elevated to a safety level equivalent to component-level SIL 4 relays.

Architectural Paradigm: Where is Safety Located?

The fundamental difference between the two approaches is whether safety is confined to a purchased physical component or dispersed throughout the entire system design.

Approach A: Component-Level Safety (Clearsy Model)

This model relies on the certified black box principle.

• Internal Oversight: All diagnostics, redundancy, and safety logic are embedded inside the sealed unit before it leaves the factory.
• Integrator’s Role is Passive: The integrator simply sends the command. They do not have to worry about whether the relay contact is welded, the health of the coil, or the internal mechanism. The product handles this internally.
• Result: Safety is purchased as a product.

Approach B: System-Level Safety (Engineering Model)

This model relies on the architectural oversight principle.

• External Oversight: Safety resides not in the relay itself, but in the PLC software managing it. Standard industrial relays are used, but they are not left unmonitored.
• Integrator’s Role is Active: The integrator must establish a mechanism called a readback loop. Before the PLC issues a command to the relay, it physically verifies whether the relay successfully returned from the previous command.
• Result: Safety is constructed as a process.

Summary Comparison: Responsibility Matrix

Economic Analysis and Break-Even Point (TCO)

A 5-year projection based on an annual requirement of 1000 safety functions reveals the dramatic cost difference between the two approaches.

Cost Data

TCO Break-Even Analysis

Chart Analysis: Although the System-Level approach starts higher initially due to the one-time engineering cost, it passes the break-even point within the very first year thanks to dramatically lower unit costs, providing a savings of ~€1.45 Million at the end of the 5th year.

Strategic Recommendations

In light of the market’s current state and economic analyses, the recommended hybrid transition strategy for integrator firms is:

Short Term (Defense): Clearsy usage should continue in cases of customer insistence or project urgency. This minimizes project risk.

Medium Term (Preparation): Arteche/Dold-based system architecture should be applied in pilot projects, and the Safety Case documentation of this architecture should be matured. Independent Safety Assessor (ISA) approval must be obtained at this stage.

Long Term (Breakthrough): The matured and approved system architecture should become the standard solution in all high-volume projects. This will maximize the firm’s competitive strength and profitability.

Conclusion

The use of component-based SIL 4 relays (the Clearsy model) in railway signaling is a commercial comfort zone preference rather than a technical necessity. For organizations with high engineering capabilities, the System-Level approach is not just a substantial cost advantage, but a lever providing supply chain independence and strategic flexibility.

The core to the transformation is not the excellence of the technical solution, but rather the ability to correctly prove the reliability of this solution to the customer through the Safety Case and independent assessor approval. Brands like FEST, which previously operated in Turkey, have competed by bringing such required relays to the market. Today, with a new brand and formation, this process can certainly be advanced once more.

Recent intelligence from the field indicates that local engineering firms are preparing to design their own safety relay architectures to offer CENELEC-compliant standard solutions to the Turkish market at highly competitive and affordable prices. We sincerely hope that such visionary initiatives will succeed in significantly breaking foreign dependency and introducing much-needed flexibility into the monopolistic supply chain.

References

• EN 50129: Railway Applications – Communication, signaling and processing systems
• EN 50155: Railway Applications – Electronic equipment used on rolling stock
• EN 50205: Relays with forcibly guided (mechanically linked) contacts

Related Links

 Related Article: → Vital vs. Forcibly Guided: Engineering Analysis of Relay Technologies

Last update: March 2026 | Version: 1.1

Global railway networks are exposed to multidimensional physical threats, ranging from economically motivated theft correlated with commodity price fluctuations to asymmetric sabotage risks triggered by geopolitical tensions. This study examines the statistical distribution of security threats, material-based attack vectors, and the methodology of deducing perpetrator motivation from field evidence, utilizing Open Source Intelligence (OSINT) data, UIC (International Union of Railways) incident analyses, and LME copper price movements. The acquired data indicates that railway security is transitioning from a mere public order issue to a national critical infrastructure security framework.

Key Findings

• The Security Paradox of Material Transition: The technological transformation of infrastructures (the shift from conventional copper architecture to a fiber-optic communication backbone) fundamentally alters the current threat profile.
• Motivational Distinction: While copper theft (90-95%) is an action driven by the economic value of physical material (scrap sale), fiber-optic sabotage is a strategic intervention directly focused on creating system blindness and aimed at operational disruption.
• The Role of Forensic Field Analysis: Accurate interpretation of physical signs left at the crime scene (e.g., missing hardware vs. targeted incision) is the most critical parameter in determining the nature of the action (economic crime or asymmetric sabotage).
• Hybrid Processes: Recent incidents, particularly reported in the European region, indicate that the boundaries between organized economic crime events and sabotage elements considered to be state-sponsored occasionally blur.

Global Threat Landscape: Proportional Distribution

(Source: General assessment in light of UIC Metal Theft on Railways Report data)

The Industrial Scale of Theft

The frequency of theft incidents tends to exhibit a linear relationship with global metal supply-demand balances. Particularly between 2010 and 2024, the rise in copper’s index value traded via the LME (London Metal Exchange) has made unprotected railway yard infrastructures potential targets for organized entities.

Reference Case – South Africa Transnet Operation: According to operator (Transnet) statements, approximately 1,121 km of cable theft incidents were recorded in the 2023 operational period. This magnitude requires the rebuilding of a considerable portion of the respective network every year, consuming the maintenance and repair budget. Evidence on the field confirms that dismantling operations are carried out in a mobilized manner by highly organized groups.

Sabotage Dynamics and Asymmetric Actions

According to reports and analyses by critical infrastructure protection agencies across Europe (including ENISA), an “intervention/sabotage” trend targeting logistical arteries has been monitored, especially following the outbreak of conflicts in Eastern Europe. In the 2024-2025 projection, various incidents directed at multiple infrastructures (energy, communication, railways) have been recorded specifically in Europe. These specific interventions are devoid of theft motives and are asymmetric actions designed to slow down strategic shipments, create communication outages, or establish blockades in the supply chain.

Infrastructure Material Analysis: Copper vs. Fiber Optic

Copper Architecture: Legacy Infrastructure

When evaluating the system as a whole, conventional railway lines remain reliant on copper transmission and grounding hardware in the 60-80% band.

Critical Usage Points:

• Track Circuits (Impedance Bonds)
• Switch Point Drive Mechanisms
• Field Signal Instruments
• Electrification Catenary Grounding Equipment

Security Vulnerability Profile: The predominant portion of actual theft incidents encountered in the sector consists of lines carrying copper. A broad spectrum is at risk, ranging from catenary overhead line tension weights to thick-section underground grounding cables in substations.

Fiber Optic: The Communication Backbone

Security Vulnerability Profile: Since fiber-optic systems carry glass strands, they possess no financial equivalent in the metal market. 99% of fiber outages reported in the literature are either asymmetric actions aimed directly at sabotaging data flow or accidental damages resulting from the perpetrator failing to distinguish the cable type (due to the thick black outer protective sheath) and mistaking it for copper.

The Paradox Brought by Material Transition

Although technological modernization offers the potential to reduce “Theft” rates; it renders cyber-physical systems more open and vulnerable to “Sabotage” scenarios. While an outage in the copper infrastructure mostly causes regional local security vulnerabilities and singular relay drops; the severing of a single fiber cable running through the main backbone creates a “Single Point of Failure” scenario capable of simultaneously bringing down GSM-R, interlocking communication data, and SCADA telemetry across an axis of hundreds of kilometers.

Physical Attack Typology: Crime Scene Analysis Matrix

Classifying physical damage through an architectural approach provides reference data for Root Cause Analysis:

Type A: Copper Cable Theft

• Target Points: Power transmission lines, catenary masts, substations.
• Forensic Findings:
  • Material Loss: The main conductive parts of the cables have been removed from the facility.
  • Processing Marks: Plastic sheath remnants and burn marks are found in the environment (done to reduce weight).
  • Mobility Evidence: Large-scale tire, track, or dragging marks belonging to heavy transport vehicles are visible.
  • Operation Window: Generally, time boundaries between 01:00 and 04:00, which are low traffic hours, are preferred.

Type B: Targeted Sabotage

• Target Points: Main fiber-optic distribution centers, critical relay/TCC communication cabinets, GSM-R station bases.
• Forensic Findings:
  • Material Presence: All severed cables are abandoned at the scene.
  • Detectable Precision: A surgical cut is made by specifically selecting thin data lines carrying direct communication data instead of grounding or high voltage lines.
  • Simultaneity: Simultaneous actions are executed at different locations to decommission distributed redundancy lines.

Type C: Misidentification-Induced Damage

• Scenario Type: Material identification error by groups acting with theft motivation.
• Forensic Findings: Thick outer protective armored fiber cables are cut, but abandoned in place when the material content (glass strand) is realized. Additional traces of classical copper cutting attempts should undoubtedly be sought in the immediate vicinity.

Comparative Attack Analysis Matrix

Sample Field Findings Analysis

Case A: Germany GSM-R Outage (Sample – October 2022)

In the incident that paralyzed the main train traffic in Germany’s northern corridor during the specified timeframe, the main and redundant lines at two critical GSM-R fiber-optic communication points averaging 500 km apart were neutralized in a coordinated manner. Verdict Outcome: The ability to bypass distributed redundancy with such precision led to the assessment that the perpetrator element is an organization that commands the railway operational architecture, knows the system design, and acts in a planned manner.

Case B: France HSR Process (Sample – 2024 Event Period)

On the eve of a large-scale international event, arson-based actions were carried out on three critical arteries feeding the TGV main lines. Verdict Outcome: No evidence of theft was observed at the focal points feeding the signaling centers. The style of the action; aligned with the methodology of organized public order threats in terms of its direct aim to simulate asymmetric impact, psychological pressure, and Denial of Service (DoS) on a physical dimension.

Architectural Solutions and Mitigation Strategies

Engineering-based risk mitigation approaches that can be developed against the aforementioned threats:

Distributed Acoustic Sensing (DAS) Integration

It is an intelligent topology where the existing unused or dark fiber internal structure is evaluated as an acoustic analysis sensor.

• Core Principle: The Rayleigh backscatter of laser pulses assigned into the line is continuously analyzed, deriving distance and vibration threshold values.
• Assessment: Offers the possibility of detecting a potential threat via soil excavation vibrations before the wire fence is breached. However, since DAS investments will generate a significant amount of environmental “noise” (animal passage, train vibration, weather conditions); it is imperative that the raw data is integrated into advanced Artificial Intelligence (Edge AI) based signal processing systems so as not to fatigue the alarm system. Given the high CapEx budget requirement, it presents feasibility only in strategic corridors.

Forensic DNA Marking

Provides the transformation of facility traceability into legal evidence to deter industrial metal thefts.

• Core Principle: It is the application of a synthetic and unique polymer-based liquid, detected under ultraviolet light, to line components.
• Assessment: It aims to form technical evidence against the criminal network subject to the offense by analyzing the scrap that falls into the black market following the theft. It ensures deterrence by making the salability of metal in recovery or secondary markets sectorally risky.

Design and Material Revisions

• Designing the transition from copper to aluminum-based (CCS – Copper Clad Steel) bimetallic cables in grounding areas within the context of its very low liquidity in the scrap market.
• Confining aerial cables entirely to underground passages through architecturally reinforced precast concrete culverts.

Conclusion

The era of traditional wire fences and passive protection in critical railway structures is coming to an end. Evaluated from the lens of systems engineering:

1. The Dual Challenge: Railway infrastructures are caught between a heavy OPEX burden (90%) arising from theft and extremely low-probability but high-risk destruction scenarios originating from sabotage.
2. Root Cause Verification: There is a need for “Telemetric TDR” or “DAS” architectures capable of detecting whether a dropped signal or reduced voltage at the system center is a technical corrosion, a cable break, or a deliberate severing without having to visit the field.
3. The Necessity of an Analytical Approach: Instead of directly encoding an anomaly encountered at the scene with the banality of a theft attempt or a coordinated sabotage conspiracy theory; a rational methodology should be applied by considering the damage typology, material preferences, timing, and interventions on redundancy.

When examining the risk matrix in infrastructures; the finding is obtained that technological evolution not only facilitates communication but simultaneously promotes physical threats to cyber-physical scenarios. It should be expected that the railway security standards of the future will step out of the isolated silo of operational technology (OT) and physical breach alarm (CCTV, DAS, Access Control) systems and become integrated within a single SOC (Security Operations Center) pool.

References

Data Compilation and Analysis Base: The current review is based on a methodological synthesis pertaining to Open Source Intelligence (OSINT) examinations, independent security and breach frequency analyses published by institutions, and market commodity correlations.

• UIC (International Union of Railways): Security committee databases
• ENISA (EU Cybersecurity Agency): Railway critical infrastructure threat landscape studies
• LME (London Metal Exchange): Ten-year global commodity and scrap-based supply-demand price charts
• Global Initiative Against Transnational Organized Crime: Metal-based criminal organizations case reports

Documents

 Download Document: Railway Security Threat Analysis Report Turkish (PDF)

Last updated: March 2026 | Version: 2.0