The 3 Most Common Misunderstandings About SEMI E187

Clearing the confusion to help suppliers achieve compliance faster

As more semiconductor giants like TSMC push suppliers to adopt SEMI E187 cybersecurity standards, many equipment vendors have started preparing for E187 certification, audit readiness, and compliance workflows. However, Janus has observed in our consulting projects that there are several widespread misunderstandings about SEMI E187, leading many suppliers to spend time and cost in the wrong direction. Here are the three most common misconceptions — and how to correct them.

Misunderstanding 1｜SEMI E187 is a fab-level compliance requirement

Many assume that SEMI E187 applies to semiconductor fabs.In fact, E187 targets semiconductor equipment, not factories. Before delivering a tool (e.g., wafer handler, etcher, or stepper) to a fab,the supplier must ensure cybersecurity hardening and complete a self-assessment report.

In short:

• The implementer is the equipment vendor, not the fab.

• The goal is to ensure tools entering fabs meet baseline security requirements and won’t become cyber entry points.

That’s why SEMI E187 is known as a “supply chain cybersecurity standard”— it defines pre-shipment security accountability.

Misunderstanding 2｜SEMI E187 is a government regulation

Another misconception is that E187 is a government-enforced law. In reality, E187 was not established by government mandate.It was jointly driven by the industry — led by TSMC (Taiwan Semiconductor Manufacturing Company), ITRI (Industrial Technology Research Institute), and key members such as ASE (Advanced Semiconductor Engineering), PSMC (Powerchip Semiconductor Manufacturing Corp.), and Delta Electronics. Together, these organizations built a standardized framework to ensure that equipment delivered to fabs is secured before installation and does not become a point of intrusion.

The key takeaway:E187 is an industry-driven supply chain security standard — not a legal requirement, but a market prerequisite for acceptance and delivery.

Misunderstanding 3｜Installing antivirus or a firewall is enough

This is one of the most common misinterpretations.E187 is not just about having antivirus software or a firewall.It requires a full framework of security design, audit processes, and traceability at the equipment level, including:

• Security patch and update management

• Network configuration and access control

• Log recording and traceability

• Malware protection and vulnerability scanning

• Network segmentation and Zero Trust enforcement

  
  

In other words, E187 defines a security system, not a product.This is where many suppliers underestimate the effort required.

Janus Insight｜How AI Microsegmentation Helps Achieve E187 Compliance

From our experience assisting multiple suppliers,the biggest challenge is not the lack of technology — it’s the difficulty of maintaining continuous security.

Manual firewall management and patching are unsustainable for large equipment networks,especially with aging (EOS/EOL) systems still running in production.Effective network isolation and auditable visibility are key to compliance.

Janus netKeeper, our AI-driven microsegmentation solution, addresses this by offering:

• Plug-and-play deployment without modifying existing architecture

• AI-based allowlist learning to reduce configuration errors

• Automated lateral movement prevention and unknown traffic blocking

• Built-in audit logs aligned with SEMI E187 requirements

  
  

With AI microsegmentation, suppliers can achieve compliance faster and more sustainably — with less human effort.

Conclusion

SEMI E187 isn’t hard — misunderstanding it is.By understanding its intent, suppliers can transform compliance into competitive advantage.

Janus netKeeper enables suppliers to meet SEMI E187 faster and smarter,turning “audit readiness” into an opportunity for trust and differentiation.