What was exposed, when it happened, and which databases confirm it.
- accounts
- 1,736,520
- Breached
- March 31, 2026
- Last Update
- April 12, 2026
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
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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.
Compromised Info
- Email addresses
- Names
- Phone numbers
- Physical addresses
- Support tickets
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- HIBP
FAQ
What was leaked in the Hallmark breach?
The Hallmark breach exposed: Email addresses, Names, Phone numbers, Physical addresses, and Support tickets.
When did the Hallmark breach happen?
The Hallmark breach was disclosed on March 31, 2026 and affected 1,736,520 records.
Am I affected by the Hallmark breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the Hallmark leak.