Hallmark data breach
The Hallmark breach happened on March 31, 2026 and exposed 1,736,520 accounts. 5 kinds of data were exposed.
Overview
- Site
- hallmark.com
- Breach date
- March 31, 2026
- Recorded on
- April 12, 2026
- Accounts exposed
- 1,736,520
- Exposed data
- Email addresses, Names, Phone numbers, Physical addresses, Support tickets
- Risk score
- 46 out of 100
Risk based on the exposed data
This breach scores 46 out of 100. The score is driven mostly by Phone numbers, Physical addresses, Email addresses.
The risk score is a guide to how dangerous a breach is, judged by the kinds of data exposed. The number of accounts is not included.
Breaches from the same period
- Paidwork (2026-03-29, 23,272,765 accounts)
- SongTrivia2 (2026-04-02, 291,739 accounts)
- Amtrak (2026-04-03, 2,147,679 accounts)
What affected users should do
- Passwords were not exposed, but you may receive fake emails aimed at the exposed email addresses.
- Turn on two-factor authentication for your login.
- Phone numbers were exposed, so watch out for impersonation by text message or phone call.
This site organizes publicly available information about data breaches. Data as of July 19, 2026. Breach dates are as originally listed; when only the month is known, the date is recorded as the 1st.