**Source : The Hacker News | 5 juin 2026** Cybersecurity researchers have discovered a previously unreported threat cluster dubbed OP-512 (where "OP" stands for "opponent") that has been observed targeting Microsoft Internet Information Services (IIS) servers to deploy a bespoke web shell framework. ReliaQuest has assessed with moderate to high confidence that the espionage-focused activity is linked to China. "OP-512 was highly 👉 **Lire l'article complet sur The Hacker News :** [https://thehackernews.com/2026/06/new-threat-cluster-op-512-targets.html](https://thehackernews.com/2026/06/new-threat-cluster-op-512-targets.html)