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Cybersecurity breach and AI threat roundup (Oct 20, 2026)
• US agencies detail incident response practices for rogue AI agents • AI platform Cairn abused to hack over 100 organizations • Microsoft targets rogue AI agents with dynamic permissions and risk scoring • Ex‑OpenAI worker accused of bugging conference room planned for Saudi Arabia • Hackers steal 1.8 million records from Nikkei • AOMEI Backupper compromised in short‑burst supply‑chain campaign • 970,000 Medi‑Cal members affected by Paradigm Healthcare data breach • Ahold Delhaize restoring services disrupted by cyberattack