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Breach occurred 2026-03-31Verifiedhallmark.com
What happened
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.
Data exposed
Frequently asked questions
The Hallmark data breach occurred on March 31, 2026. It was added to Have I Been Pwned's breach catalog on April 12, 2026.
1,736,520 accounts were affected by the Hallmark data breach, according to Have I Been Pwned's records.
The Hallmark breach exposed the following data types: Email addresses, Names, Phone numbers, Physical addresses, Support tickets.
Yes. Have I Been Pwned has verified the Hallmark breach, meaning there's confirmed evidence the exposed data is genuine and tied to real accounts.
Use KazaSec's free Email Breach Checker (/tools/breach-check) to check whether a specific email address has surfaced in the Hallmark breach, or any other known breach — the tool never stores what you search.
Our free Email Breach Checker tells you whether a specific email address has surfaced in this breach — or any other known breach — without ever storing what you search.
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