Company archive

Hallmark data breach history

Breached tracks public reports, source links, affected counts, exposed data types, and updates for Hallmark.

Breaches

Known affected

1,736,520

Latest report

5/1/2026

Data types

Common exposed data

Tracked reports

Hallmark suffered a breach in March 2026 after attackers accessed data stored in Salesforce, exposing approximately 1.7 million customer records.