More details on this breach:
The Oakland Unified School District abandoned its dilapidated headquarters in January 2013 after a janitor left a faucet on overnight and flooded the building. Educators departed and the homeless moved in, but no one bothered to remove or secure records that were scattered throughout the building.
The folly of that oversight became apparent this month when district officials revealed that five employees have been victims of identity theft and notified all employees (pdf) that their personal information may have been compromised.
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