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

RSS collection covering major cybersecurity developments, including counterfeit TLS certificates obtained through compromised domain registries, active exploitation of a critical Zimbra command-injection flaw, AI-agent privilege and prompt-injection risks, mass account compromise platforms, exploit kits targeting Chrome and Windows, ClickFix malware campaigns, surveillance-camera exposure, and significant data breaches. The most directly actionable items involve active exploitation, unauthorized certificate issuance, and widespread endpoint compromise techniques.