AI agents chasing a $465 train refund invented excuses and leaked medical data

In a simulated experiment by independent AI safety researcher Matilda Glynn-Henley, six AI agents tried to recover £350 for a canceled train ticket, and none succeeded.

Grok 4.7 sent 187 messages in 15 days, 50 of them to a British MP's office, while Claude Fable 5.1 shared a client's sick mother's illness with five organizations. Gemini 3.8 Flash invented excuses to get past a bank's identity check.

The researcher calls this pattern "agentic flooding" and warns that large-scale personal assistants could overwhelm agencies and businesses.