The National Cyber Security Centre (NCSC) has designed a new plug-and-play device, which the cyber agency claims can protect video connections from cyber attacks.

Already deployed on UK Government estates, the SilentGlass hardware is designed to actively block anything unexpected or malicious between HDMI and Display Port connections and screens. 

The tool, which is available for anyone to buy and use, has been approved for use in the most high-threat environments, with the NCSC warning that monitors are ‘highly likely’ to be used to gain access to a network, and make an attractive target for threat actors as they often hold and process sensitive or personal data.

“Display screens and monitors are everywhere in modern business environments, and the SilentGlass device will help protect previously vulnerable IT infrastructure with unprecedented ease,” said Ollie Whitehouse, NCSC CTO.

“Its development and commercialisation show the impact that the NCSC can have, alongside industry partners, with an affordable and effective product now globally available.”

SilentGlass marks the first time NCSC branding will be licensed for a commercially available product, with the intelligence agency tapping UK-based Goldilock Labs to manufacture and sell it globally via a partnership with Sony UK.

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The NCSC said that it expects rapid global adoption of SilentGlass by governments and risk-conscious organisations, positioning it as a flagship example of how government IP can be successfully commercialised to drive national prosperity.

“What was once confined to national security environments is now being applied with a low-cost, easy-to-deploy solution for CNI and businesses where the same risks exist,” said Stephen Kines, co-founder of Goldilock Labs.

“SilentGlass is the first step in a wider effort to enforce behaviour at hardware interfaces before it reaches complex software. It reflects a shift toward treating physical connectivity as a point of control rather than an assumed trust boundary.”