Anthropic — Cyber Attacks, Breaches & Threat Activity

Threat entity extracted from intelligence sources

Frequency
234
occurrences
First Seen
November 4, 2025
Last Seen
August 31, 2026

Related Threat Clusters

Recent Intelligence Reports

  • Claude hit by infostealer malware campaign stealing session credentials — Finance.Biggo · August 31, 2026
  • Anthropic cracks down on hijacked user accounts mining AI tokens — Theregister · August 31, 2026
  • Lunar Cyber Launches Token Exposure Monitoring as Infostealers Target Developer and AI ... — Markets.Businessinsider · August 31, 2026
  • Lunar Cyber Launches Token Exposure Monitoring as Infostealers Target Developer and AI ... — Cio · August 31, 2026
  • July 30 blog post — www.anthropic.com · August 31, 2026
  • Anthropic locks out Claude users after infostealers hijack login sessions — Feeds2.Feedburner · August 31, 2026
  • Anthropic warns: attackers are hijacking active Claude sessions and using up other people's limits — Mezha.Ua · August 31, 2026
  • Claude Fremde Nutzen Dein Limit Anthropic Loescht Deine Karte.1383551.0 — www.notebookcheck.com · August 31, 2026

CVSS v3.1 Breakdown