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OpenAI News April 30, 2026 news

Introducing Advanced Account Security

OpenAI's opt-in Advanced Account Security applies to ChatGPT and Codex. It replaces password login with passkeys or FIDO security keys, disables email and SMS recovery, shortens sessions, adds login alerts and session management, and automatically excludes conversations from model training. The stronger recovery model also means support cannot restore access for an enrolled user.

Håkon Måløy July 30, 2026 analysis

Context Collapse: hidden Word prompts propagate through Copilot-generated documents

Håkon Måløy demonstrates a cross-domain prompt-injection chain in Microsoft 365 Copilot for Word: hidden instructions in an external document alter a generated report and copy themselves into the output, which becomes a trusted carrier in later drafting sessions. Microsoft confirmed the behavior and deployed payload-specific mitigations, but Måløy reproduced the attack class after 144 days of coordinated disclosure; each hop still requires another Copilot drafting or editing operation.