A year-long Check Point Research investigation has connected three China-nexus cyber-espionage clusters targeting government, telecommunications and critical infrastructure organizations across Europe ...

Ubuntu 26.10 adds certificate revocation checks to curl, blocking HTTPS connections using revoked SSL certificates through ...

Ubuntu 26.10 “Stonking Stingray” introduces built-in certificate revocation checking for curl, closing a security gap between browser protections and command-line HTTPS connections.

Mudhra has revoked eight additional intermediate certificate authorities (CAs) after conducting a thorough review of the key issue that led to its October security failure.

Ubuntu certificate revocation checks arrive in curl on 26.10 via upki, which refuses revoked certificates. OpenSSL support is due in 27.04.

CopperDragon malware supplier may link five Chinese hacking groups, Check Point Research said Tuesday in a report on three espionage campaigns against telecoms, governments and critical infrastructure ...

An expired SSL certificate locks visitors out with security warnings. Here's why it happens, how to check and fix it, and how ...

An attacker came close to exploiting a maximum-severity flaw. Here's what to know.

On October 17, 2026, the private keys of eight eMudhra intermediate CAs, six for TLS and two for code signing, were reported as compromised. This is an industry-wide certificate authority incident, ...