Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Costco

1 breachOther

Hacking breachHacking, data exposed not stated. Reported to the Washington AG.USSep 22, 2015
About

Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages.

Added2026-09-25
Costco, 2015-09-22
Added2026-09-25
Costco