Let's Encrypt cuts certificate lifetimes to 64 days starting February 2027

An RSS collection of recent cybersecurity reporting covering certificate authority compromises, actively exploited vulnerabilities, AI-agent security weaknesses, ransomware and account-compromise campaigns, surveillance-system breaches, social-engineering malware, and emerging cryptographic threats. The most urgent items involve counterfeit TLS certificates, exploitation of a critical Zimbra flaw for remote command injection and email theft, active Chrome/Windows exploit-kit use, and large-scale account compromises.