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2021 British Council — open Azure blob exposed ~144k student files (third-party hosted); ICO notified

2021 10.0K records affected Share on X

Data compromised

Student names, emails/IDs, enrollment attributes and related admin artifacts per researcher inventory and British Council statements

Technical writeup

Researcher discoveries reported by BleepingComputer, SecurityWeek, and Security Affairs in December 2021 found a misconfigured Microsoft Azure blob holding more than 144,000 files with student administration metadata for the British Council’s international education programs. The Council attributed storage to a third-party supplier, secured the container after responsible disclosure, and stated a materially smaller subset (on the order of ~10,000 learner records) bore significant exposure—while researchers enumerated a wider file count. Separately, trade coverage referenced two ransomware incidents in prior years causing operational downtime; this row focuses on the verifiable cloud misconfiguration event.

Root cause

Public cloud storage misconfiguration / inadequate access controls on vendor-hosted blob repository

References