The Brief 23
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NexusRiver — August 18, 2026 — The Defender’s Window Has a Lock On It TLP:AMBER Limited disclosure — recipient organization only NexusRiver CISO Intelligence Brief · Tuesday, August 18, 2026 The Defender’s Window Has a Lock On It OpenAI’s president published a first-person account of an agent reconfiguring his infrastructure. Everything it did was authorized….
NexusRiver — Issue 53 | 20 August 2026 TLP:AMBER NexusRiver Issue 53 · Thursday, 20 August 2026 · Eric Yehle Five federal agencies confirmed yesterday that attackers are using AI to write exploitation code against physical infrastructure. The mitigations they published do not contain the control that would have stopped the write. 01Federal Advisory Washington…