Ransom Extortion: Cloud File Exfil + Delete + Payment Demand - ATR-2026-01754 (adca7d42-8736-502d-b5ca-586d5d4e7880)
Detects ransom-extortion injections targeting cloud storage: the agent is commanded to (1) identify the N largest or most sensitive files in a cloud storage account, (2) email them as attachments to an attacker-controlled address, (3) delete the originals, and (4) send the victim a ransom note. Distinguished from ATR-2026-01753 (which covers email-content exfil) by the cloud-file attachment vector. The artifact pattern is: cloud-file-attach + email-to-external + delete-files + ransom-subject-or-IBAN. Derived from AgentDojo indirect-pi-ransom-extortion corpus (2026-06).