All breaches
Hallmark data breach1.7M accounts compromised on 2026-03-31
Verified
Hallmark (hallmark.com) was the source of a data breach dated 2026-03-31, exposing 1,736,520 accounts. The details below are mirrored from Have I Been Pwned and reflect the source's account of the incident at the time of publication.
Incident Report
| Target Organization | Hallmark |
|---|---|
| Source Name | Hallmark |
| Domain | hallmark.com |
| Breach Date | 2026-03-31 |
| Added to HIBP | 2026-04-12 |
| Accounts Compromised | 1,736,520(1.7M) |
| Data Exposed | Email addressesNamesPhone numbersPhysical addressesSupport tickets |
| Status | Verified by HIBP |
Description
In March 2026, Hallmark suffered an alleged breach and subsequent extortion after attackers gained access to data stored within Salesforce. The data was later published after the extortion deadline passed, exposing 1.7M unique email addresses across both Hallmark and the Hallmark+ streaming service, along with names, phone numbers, physical addresses and support tickets.
Disclaimer
HackerFeeds does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.