Cyber Brief 25-12 - November 2025

This Cyber Brief synthesises 277 open-source reports from November 2025 describing coordinated law-enforcement takedowns of malware infrastructure, multiple nation-state and commercial spyware campaigns (including AI-agentic espionage and update-hijacking), active malware and infostealer resurgences, major data breaches affecting millions and large enterprises, exploitation of zero-days and public PoCs, and disruptive destructive operations against critical sectors—highlighting broad, active threats across government, industry, and civil society.