Mastering RF Shielding, TEMPEST, and the New Regulations
- Alex Leutwyler

- Jul 22
- 4 min read

In a world where data breaches dominate headlines, often linked to cyberattacks it’s easy to focus solely on firewalls and encryption. But there’s a hidden vulnerability that often gets overlooked: the invisible signals leaking from our electronic devices. These electromagnetic emanations can be intercepted by adversaries, turning seemingly secure facilities into open books. Physical security—especially for classified or proprietary data—is no longer just about locks and guards. It’s about building invisible walls to protect what matters most.
Enter RF shielding, TEMPEST compliance, and facility testing—the three pillars of a secure environment. These aren’t just technical buzzwords; they’re interconnected layers of defense that work together to keep sensitive information safe. What worked yesterday might not cut it today, and staying ahead requires expertise and vigilance.
The Core of Secure Facilities: Three Pillars Explained
Let’s break down the essentials of keeping SCIF’s and SAPF’s secure.
RF Shielding: Your Invisible Fortress
Imagine a room where no signals can leak in or out. That’s what RF (Radio Frequency) shielding does. It creates a barrier that blocks electromagnetic radiation, protecting your equipment from external interference and—crucially—stopping sensitive data from escaping as “compromising emanations.” These unintended signals can carry classified information, ripe for the picking by anyone with the right tools.
For places like Sensitive Compartmented Information Facilities (SCIFs) or Special Access Program Facilities (SAPF), RF shielding has become non-negotiable. It relies on conductive materials, precision construction, and a rethink of how every entry point is managed—think shielded doors, windows, and specialized filters for power and data lines. Get it right, and you’ve built an invisible fortress. Get it wrong, and you’re leaking secrets without even knowing it.
TEMPEST Compliance: Locking Down Signal Spillage
TEMPEST isn’t just a cool codename; it’s a NATO standard designed to stop unintended signals—whether acoustic, optical, or electrical—from giving away classified information. Born during the Cold War, it’s more relevant than ever as signal-sniffing tech gets smarter. From power lines to monitors to network cables, anything can betray you if not properly secured.
TEMPEST goes beyond RF shielding, tackling all forms of signal leakage with a mix of advanced shielding, filtering, strategic equipment placement, and secure standoffs. The goal? Keep those signals so faint they’re useless to anyone trying to eavesdrop. It’s like making sure your secrets stay whispered, not shouted.
Facility Testing: Proving It Works
Building a secure facility is only half the battle. Without testing, you’re just hoping it’s secure—and hope isn’t a strategy. Facility testing verifies that your RF shielding and TEMPEST measures actually work, both when the facility is built and over time as equipment ages or threats evolve.
Initial Acceptance Testing: Confirms your new setup meets standards right out of the gate.
Periodic Re-testing: Catches wear-and-tear issues or new vulnerabilities before they become problems.
Diagnostic Testing: Pinpoints exactly what’s wrong if something fails.
Skip testing, and you’re rolling the dice on data breaches, or worst case, losing your facility’s accreditation. One weak link—like a degraded shield—can unravel your entire security posture.
The New Rules: Navigating ICD 705 and Beyond
The threat landscape is shifting, and so are the rules. Regulatory updates are pushing organizations to step up their game, especially for SCIFs and SAPF’s handling classified information.
The Intelligence Community Directive (ICD) 705 sets the bar for SCIF construction and management. Its Technical Specifications are updated to keep pace with new technology and threats. Recently, the Senate Intelligence Committee upped the ante, directing the Director of National Intelligence (DNI) to deliver a 5-year plan to implement these updates across the Intelligence Community. This isn’t just a suggestion, it’s a mandate.
The plan must include:
A briefing on current threats to justify the upgrades.
Cost estimates for government agencies and departments.
Strategies to avoid disruptions during renovations, like moving personnel or equipment.
This signals a new era of accountability. Compliance isn’t a one-and-done task; it’s a long-term commitment that demands strategic planning.
What It Means for You
For government agencies, contractors, and private industry, these updates are a wake-up call. Upgrading SCIFs and SAPFs means costs—both financial and operational. Moving people and equipment during renovations can disrupt workflows, and downtime isn’t cheap. The DNI’s mandate for a mitigation plan underscores the need for smart, phased approaches to keep operations running smoothly.
Organizations need a roadmap to stay compliant over the next five years, aligning with the DNI’s vision. Falling short could mean losing contracts, facing penalties, or worse—compromising national security.
Take Control of Your Security Now
The threats are real, and the regulations are tightening. Don’t leave your sensitive information exposed to invisible risks. At Emblem Builders we don’t just build shields or run tests—we take a 360-degree approach. From in-depth threat assessments to designing RF shielding and TEMPEST countermeasures, our expertise extends to various secure construction methodologies, ensuring we can tailor a solution to your specific needs and timeline:
Design and Construction: Utilizing traditional construction methods for bespoke, integrated solutions.
Modular Panelized Solutions: Offering efficient, pre-fabricated systems for faster deployment.
Roll-on Modular: Providing highly adaptable, deployable, and scalable secure environments.
Whether it’s retrofitting your existing space or designing a solution for the future, we’ve got you covered.



Comments