Which of the following TECMP countermeasures is integral for architectural shielding?

The use of shielded enclosures is a fundamental aspect of architectural shielding in the context of technical countermeasures. Shielded enclosures are specifically designed to prevent unauthorized access to sensitive information by blocking electromagnetic emissions that can be exploited through various types of surveillance. This type of countermeasure creates a physical barrier that protects the information contained within the enclosure by minimizing the risk of interception or eavesdropping from external sources.

This approach is particularly important in environments where sensitive data is processed or stored, as it addresses vulnerabilities by reducing the potential attack surface. Shielded enclosures effectively complement other security practices by ensuring that even if an attacker were to attempt to capture emissions from the facility, the data remains secure and protected from exposure.

In contrast, the other choices presented, such as telephone line filters, equipment profiling, and power supply adjustments, serve different roles in security measures but do not specifically focus on architectural shielding as a primary objective. These measures may contribute to an overall security strategy, but the use of shielded enclosures directly aligns with the goal of architectural shielding.