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SilentGlass launch as a monitor-connection protection security device

Security Tool/Service
First reported
Last updated
Happening score
H score 46
2 unique sources, 2 articles

Summary

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The UK National Cyber Security Centre has released SilentGlass, a plug-and-play device that blocks unexpected or malicious signals between HDMI or display port connections and monitor screens, extending protection to high-threat environments.

Related Happenings

Anthropic Project Glasswing expands Claude Mythos Preview access

Security Tool/Service
H score54 First: 03.06.2026 12:30 Last: 03.06.2026 12:30 Sources 1

About this happening: **Anthropic** expanded **Project Glasswing** on **June 2**, extending **Claude Mythos Preview** to **150 additional organizations** and widening a security-focused AI program used...

Open Happening

ScarCruft sqgame[.]net supply-chain espionage campaign

Campaign
H score8 First: 05.05.2026 12:07 Last: 05.05.2026 12:07 Sources 1

About this happening: **ScarCruft**'s **late-2024** supply-chain campaign against **sqgame[.]net** expanded a niche gaming platform compromise into a **multi-platform espionage channel**. The operation...

Open Happening

DEEP#DOOR Python backdoor framework

Malware Activity
H score28 First: 30.04.2026 15:36 Last: 30.04.2026 15:36 Sources 1

About this happening: **DEEP#DOOR** is a newly disclosed **Python-based backdoor framework** that can keep **persistent access** to compromised Windows hosts while stealing browser, SSH, and cloud cred...

Open Happening

Federal civilian executive branch agency hit by network compromise

Incident
H score21 First: 24.04.2026 23:34 Last: 24.04.2026 23:34 Sources 1

About this happening: A **federal civilian executive branch agency** was compromised in an **early September 2025** intrusion that left attackers with persistent access on **Cisco Firepower** and **Sec...

Open Happening

FIRESTARTER malware on Cisco ASA and FTD devices

Malware Activity
H score33 First: 23.04.2026 15:00 Last: 23.04.2026 15:00 Sources 1

About this happening: CISA has published analysis of **FIRESTARTER**, a malware strain that enables **remote access and control** on **Cisco Firepower** and **Secure Firewall** devices, raising the ris...

Latest development: 24.04.2026 23:34

CISA, NCSC-UK, and Cisco detailed Firestarter persistence on Cisco Firepower and Secure Firewall devices running ASA or FTD software, attributing the backdoor to UAT-4356 and linking the activity to ArcaneDoor. The malware modifies CSP_MOUNT_LIST, stores a copy in /opt/cisco/platform/logs/var/log/svc_samcore.log, restores itself to /usr/bin/lina_cs, and relaunches after termination or reboot; Cisco recommends reimaging and upgrading to fixed releases, or using a cold restart only if reimaging is not possible.

Open Happening

Timeline

  1. 22.04.2026 18:00 1 articles · 2mo ago

    SilentGlass launches at CYBERUK

    Industry Or Public Sector Update

    The UK National Cyber Security Centre launched SilentGlass at CYBERUK on April 22, 2026, presenting it as a plug-and-play device that blocks unexpected or malicious activity between HDMI or display port connections and monitor screens and saying it had already been deployed on government estates.

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  2. 22.04.2026 18:00 2 articles · 2mo ago

    NCSC details SilentGlass commercialization and use case

    Initial Disclosure

    The UK National Cyber Security Centre, Goldilock Labs and Sony UK say SilentGlass is now globally available and is intended to protect display interfaces that the agency says are attractive targets because they hold valuable, sensitive or personal data.

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