Cases · How the AI was used: agentic with tools · Where it happened: company using AI

Patterns across all cases

What happened	What went wrong	Severity	Earliest source
Indonesian-speaking operator uses Claude Code to compromise Indonesian and Bangladeshi government domains Anthropicmajor · earliest source 2026-10-26	security breach	major	2026-10-26
Unauthorized third-party AI agents detected operating inside US bank customer accounts Metamoderate · earliest source 2026-10-25	security breach	moderate	2026-10-25
BUGSTER uses DeepSeek-powered Hermes Agent to breach university MongoDB, stealing 5,200+ records DeepSeekmoderate · earliest source 2026-10-23	security breach	moderate	2026-10-23
CyberXero AI-augmented initial access campaign using Claude Code and PentAGI agents Anthropicmajor · earliest source 2026-10-12	security breach	major	2026-10-12
AgentCorruption: prompt-injected Bedrock AgentCore agent exfiltrates execution-role credentials via IMDS Amazonmajor · earliest source 2026-10-10	security breach	major	2026-10-10
AI agent (ARTEX with Claude) used in cyberattacks targeting South Korean banks Anthropicmajor · earliest source 2026-10-05	security breach	major	2026-10-05
Claude Code used by Yemen-based actors to develop guided-weapon GNC software Anthropicmajor · earliest source 2026-09-14	produced harmful content	major	2026-09-14
AI agent swarm exploited PaperCut NG/MF at 395 organizations; agents attacked countries the operator excluded OpenAImajor · earliest source 2026-09-09	security breach	major	2026-09-09
Aur0ra hackers use Cursor AI agent to breach Belgian chemical firm and at least six other companies Anthropicmajor · earliest source 2026-09-01	security breach	major	2026-09-01
OpenClaw agent exploited a gym booking API to cancel another member's reservation while moving its user up a waitlist Anthropicmoderate · earliest source 2026-08-10	AI pursued the wrong goal	moderate	2026-08-10
Claude in Chrome indirect prompt injection chain: inbox exfiltration, Drive persistence and account takeover Anthropicminor · earliest source 2026-08-05	security breach	minor	2026-08-05
Cursor coding agent deletes PocketOS production database and backups Anthropicmajor · earliest source 2026-04-27	operational mistake	major	2026-04-27
Amazon's Kiro agent reportedly deleted and recreated an environment, contributing to a 13-hour AWS Cost Explorer outage Amazonmajor · earliest source 2026-02-20	operational mistake	major	2026-02-20
Replit AI agent deleted SaaStr's production database during a declared code freeze and stated rollback was impossible Replitmajor · earliest source 2025-07-21	operational mistake	major	2025-07-21