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Senior Cyber Safety Briefing – October 18, 2025

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🚨 ALERT – Envoy Air targeted in large software‑supply‑chain hack 👉 Why it matters – The airline (which handles hundreds of flights daily) confirmed a hack tied to vulnerabilities in Oracle E‑Business Suite apps that is part of a broader extortion campaign by the hacker group Cl0p . Although customer data wasn’t reported compromised, business contact info was. Reuters 📣 Call to Action – If you travel or have accounts with airlines, check for any alerts from them, change related passwords, and monitor your bank/credit statements for odd activity. 📈 ECONOMY & SECURITY – Microsoft revokes 200+ certificates used by ransomware group 👉 Why it matters – Microsoft disabled more than 200 digital certificates used to sign malicious files for a major ransomware‑actor (“Vanilla Tempest”/ Rhysida ). This reduces risk of future attacks that look “legit” even though they’re not. The Hacker News 📣 Call to Action – If you have Windows or Microsoft‑signed software, ensure OS & apps...