Silicon security has traditionally lagged behind functional safety, which benefits from mature standards and established mechanisms. But with the rise of internet-connected devices and agentic AI, the threat landscape is expanding. Malicious actors no longer need physical access to a chip; they can attempt to trigger hardware Trojans, exploit side-channel leakage, or inject faults using lasers and electromagnetic pulses. These attacks can lead to system misbehavior or the exposure of private data, making pre-silicon security verification a critical step in semiconductor development.
The source outlines a range of threat vectors that span the entire chip lifecycle. A rogue designer or a compromised third-party IP block could insert a Trojan during design, while wafer probing during manufacturing might aid reverse engineering. Once deployed, chips face activation of hidden Trojans, power and voltage side-channel attacks, and fault injection. Addressing these threats requires more than a single checkpoint; it demands an end-to-end approach that includes threat modeling, reusable security IP, and continuous analysis.
Verification teams now work alongside designers to create a dedicated security verification plan. They identify critical registers and access points, run RTL linting and static checks, and apply formal methods, simulation, and emulation to probe for weaknesses. The goal is to ensure that the final hardware is tamper-proof and that security holds up in real-world conditions. As the source notes, this is a complex undertaking, but one that is becoming essential as both attackers and AI agents grow more capable.