Microsoft named a Leader in the 2026 IDC MarketScape for MDR/MXDR for the Enterprise

Microsoft Security Blog RSS feed containing security research, threat intelligence, product updates, and defensive guidance. Notable reports cover DeadLock Rust ransomware using decentralized recovery infrastructure and double extortion, a macOS ClickFix campaign using browser-fingerprinting gates to conceal infostealer lures, ChainDrop—a self-propagating credential-stealing worm distributed through more than 400 compromised npm packages—and Midnight Blizzard/Storm-2945 activity targeting hospitality sign-in portals to deliver malware and steal credentials.