If cyber espionage via HDMI worries you, NCSC built a device to stop it

Help Net Security

April 23, 2026 at 11:16 AM

Overview

The National Cyber Security Centre (NCSC) has introduced a new device called SilentGlass, aimed at preventing cyber espionage through HDMI and DisplayPort connections. This plug-and-play tool addresses concerns that monitors can be exploited by attackers to access sensitive data, as they often process and store such information. By securing these display links, SilentGlass provides a protective measure for governments and businesses against potential cyber threats. The NCSC emphasizes the need for enhanced security in this area, given the increasing risks posed by malicious activities targeting display devices. This development is particularly relevant as organizations look for effective ways to safeguard their data from evolving cyber threats.

Key Takeaways

Affected Systems: HDMI and DisplayPort connections in monitors used by governments and businesses
Action Required: Use the SilentGlass device to secure HDMI and DisplayPort connections.
Timeline: Newly disclosed

Original Article Summary

A new cybersecurity device developed by the National Cyber Security Centre (NCSC) should be a helpful solution for protecting governments and businesses from malicious activity carried through display connections. Called SilentGlass, the plug-and-play tool is designed to protect HDMI and DisplayPort links from potential cyberattacks. The NCSC warns that monitors are an attractive target for cyber attackers as they can process and store sensitive data, and are highly likely to be exploited to gain access … More → The post If cyber espionage via HDMI worries you, NCSC built a device to stop it appeared first on Help Net Security.

Impact

HDMI and DisplayPort connections in monitors used by governments and businesses

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Newly disclosed

Remediation

Use the SilentGlass device to secure HDMI and DisplayPort connections

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Read Original Article

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