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Cybercrime
China-Linked OP-512 Uses Cryptographically Unique Web Shells in Patient IIS Server Espionage Campaign
9 June 2026 dark6
ReliaQuest has uncovered OP-512, a new China-linked threat cluster targeting IIS servers with a custom web shell framework that generates...
Vulnerability
HTTP/2 Bomb: Single-Attacker Remote DoS Exploit Hits nginx, Apache, IIS, Envoy, and Cloudflare Pingora
8 June 2026 dark6
A newly disclosed exploit called the 'HTTP/2 Bomb' can exhaust tens of gigabytes of server memory in seconds using just...