Hallmark data breach: 1.7M accounts exposed
Severity: medium · Patch status: no-fix-needed · Since 2026-04-12
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. Exposed data: email addresses, names, phone numbers, physical addresses, support tickets. The breach dates from Mar 31, 2026; Have I Been Pwned loaded it on Apr 12, 2026.
What to do
- If you had a Hallmark account, change its password and the password of any other account that reused it.
- Turn on multi-factor authentication wherever it is offered.
- Check whether your addresses are in this breach at https://haveibeenpwned.com.
- Expect targeted phishing that quotes the leaked details; verify any unexpected contact out of band.
Sources
All live incidents on Threat Watch
