What was exposed, when it happened, and which databases confirm it.
UnverifiedPassword can be found in search
- accounts
- 628,518
- Breached
- March 1, 2026
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
What happened
No description yet
Compromised Info
- Passwords
- Email addresses
- Usernames
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
HIBPnot attested
DEHASHEDnot attested
LEAKCHECK628,518
VIGILANTEnot attested
Sources & Link Methods
- LeakCheck
FAQ
What was leaked in the Hallmark.co.uk breach?
The Hallmark.co.uk breach exposed: Passwords, Email addresses, and Usernames.
When did the Hallmark.co.uk breach happen?
The Hallmark.co.uk breach was disclosed on March 1, 2026 and affected 0 records.
Am I affected by the Hallmark.co.uk breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the Hallmark.co.uk leak.