
anthropic.com
September 10, 2026
179 min read
46/100
Summary
Detecting and countering misuse of AI: September 2026 Over the past eight months, our Threat Intelligence team identified and disrupted operations in which threat actors tried to use Claude for malicious activity. In this report, we share case studies from those operations and describe how malicious use of Claude has evolved since our previous threat reports in March, August, and November 2025. In...