
When AI Agents Attack Companies (2026): Autonomous Break-Ins, Japan's Breach Wave, and What Still Works
How cyberattacks changed in 2026, drawn from primary sources: an autonomous AI agent campaign against hundreds of retailers at a mean cost of $25.46 per company with over 600,000 card records taken, the three harnesses and a documented attack chain, the 208 entries in the public AI-involvement list, the control failure inside OpenAI's own evaluation and its countermeasures, plus the Japanese breaches disclosed in September and October 2026.
















