Every public data breach

44 disclosed this week · 26,355 on record

H&R Block

Disclosed May 9, 2018Confirmed

Official notice

What is known

People affectedNot stated in the sources we have
DisclosedMay 9, 2018
DiscoveredApr 21, 2018
AttackLost or stolen device
Data exposedNot stated
SectorFinance · US
StatusConfirmed

Sources

Notices filed

Other breaches at H&R Block

History of this record
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (Washington AG), confirmed by Washington AG. Record counts are as reported. Not legal advice.

Everything about H&R Block