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ConfirmedAI safety03 Nov, 13:56 UTC

Bitdefender documents a 3AM ransomware attack on UK schools run partly by an AI agentic loop

Bitdefender diagram splitting the attack's operations between a human operator and an AI agentic loop
Bitdefender

A 3AM affiliate encrypted 37 machines across a UK school estate between 10 and 19 September; Bitdefender says some commands bore a model's tells, while how the attacker got in is unknown.

Read at Bitdefender Share

Why it matters

Bitdefender calls it the first case of its kind it has documented in Europe: a human operator set goals while something resembling an agentic loop generated, ran and retried commands, including a Veeam backup call written with the wrong port and login method, a mistake typical of a model writing from memory. Dark Reading notes the researchers stopped short of claiming full automation and that the intrusion otherwise followed a familiar ransomware playbook. Bitdefender expects such hybrid attacks to become more common in 2027. Watch for confirmation from other responders and from UK authorities.

Key facts

  • Attacker: a 3AM (ThreeAM) ransomware affiliate
  • Target: a UK school estate
  • Activity from 10 to 19 September 2026
  • 37 machines encrypted
  • Initial access method not determined
  • Bitdefender report published 3 November 2026

Sources

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