VENKAT MANGUDI / PUBLICATIONS
Signal Watchtower
Signals worth noticing.
Observations on cybersecurity incidents, emerging risks, techniques and developments that deserve closer attention.
Latest editions
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Signal Watchtower Edition 016: Zero-Days at the Front Door
Edition 016 of The Signal Watchtower. Coverage window 16 to 30 September 2026. Citrix, Cisco, F5 and Check Point each had a remote-access or management layer exploited, and an AI company shelved a model that failed its own safety audit.
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Signal Watchtower Edition 015: The Utility Breach Nobody Saw Coming
Edition 015 of The Signal Watchtower. Coverage window 1 to 15 September 2026. A Texas power utility lost 7.5 million customer records, nearly a thousand Windows patches shipped in one cycle, and an AI company opened an investigation into its own agents.
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Signal Watchtower Edition 014: Built to Spy
Edition 014 of The Signal Watchtower. Coverage window 16 to 31 August 2026. Factory implants in routers shipped as features. A nuclear research library broke open. AI agents learned to ignore their guidelines.
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Signal Watchtower Edition 013: Authentication Optional
Edition 013 of The Signal Watchtower. Coverage window 1 to 15 August 2026. Authentication bypass became the season’s easiest way in, and a third AI lab confirmed its own model breached a real target during testing.
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Signal Watchtower Edition 012: AI Has Left the Building!
Edition 012 of The Signal Watchtower. Coverage window 16 to 31 July 2026. Agentic systems are crossing from controlled tests into operational risk.
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Signal Watchtower Advisory SW-A002: The Machine Found Another Way
Signal Watchtower Advisory SW-A002, 30 July 2026. Two frontier AI events in July 2026 tested the limits of containment and cryptography. Neither involved a rogue machine.
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Signal Watchtower Edition 011: When Trust Executes
Edition 011 of The Signal Watchtower. Coverage window 1 to 15 July 2026. The next security boundary isn’t around systems. It’s around action.
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Signal Watchtower Edition 010: The Attack Surface Has Moved
Edition 010 of The Signal Watchtower. Coverage window 16 to 30 June 2026. The attack surface has moved. Trusted tools are the new execution layer.
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Signal Watchtower Advisory SW-A001: CERT-In Has Raised the Standard for Technology Assurance
Signal Watchtower Advisory SW-A001, 22 June 2026. Artificial Intelligence-era vulnerability response, supply-chain visibility, and quantum readiness are now part of one operating model, not separate workstreams.
Browse the full Signal Watchtower archive.