Hallmark
MEDIUM RISKData breach — March 2026
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.
search Check if you were affected — freeData exposed in this breach
What happened in the Hallmark data breach?
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.
The exposed data included 5 types of personal information. Learn more about what a data breach means for you.
Quick answer — was Hallmark hacked?
Yes. Hallmark was breached in March 2026. The breach exposed 1,736,520 records including email addresses, names, phone numbers. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the Hallmark breach so dangerous?
The Hallmark breach exposed 1,736,520 records — that is 1.7M people whose personal data is now circulating on the dark web. The combination of email addresses, names, phone numbers makes this a medium-risk breach that should be addressed promptly.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the Hallmark breach?
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Names — used to build profiles and target you with personalised scams
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Physical addresses — combined with other data, used for identity theft and physical fraud
Support tickets — may be combined with other breach data to build a profile for targeted attacks
Is the Hallmark breach still dangerous in 2026?
Yes. Stolen data from the Hallmark breach remains dangerous years after the incident. Research shows that over 65% of stolen credentials from older breaches have never been changed by the account holders. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2026 are still actively used in credential stuffing attacks today.
Personal information like email addresses, phone numbers, and dates of birth never expire. Even if you changed your Hallmark password, the other exposed data can be combined with information from other breaches to target you. Learn more about how long stolen data stays dangerous.
Frequently asked about the Hallmark breach
Approximately 1,736,520 user records were exposed in the Hallmark breach in March 2026.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Hallmark password elsewhere and haven't changed it, those accounts remain at risk today.
Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full Hallmark dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Hallmark password immediately, change any other account where you used the same password, enable two-factor authentication on all important accounts, and monitor for phishing emails over the next 90 days.
How this breach page is reviewed
Breach pages are generated from structured breach records and reviewed for practical risk guidance. Risk labels are based on exposed data types and are meant to help readers prioritize action.
Who was affected by the Hallmark breach?
The Hallmark data breach affected approximately 1,736,520 users who had accounts with the service. While not the largest breach on record, it still represents a significant number of compromised accounts in our database of 979+ known breaches.
If you ever created an account with Hallmark or used their services, your data may have been included in this breach. Check your email now to find out. You can also read our guide on what to do immediately after a data breach.
If your email was in the Hallmark breach
Change your Hallmark password immediately
Go to Hallmark and change your password right now. Use a strong, unique password that you have never used anywhere else.
Change any account sharing that password
If you used the same password on other sites, change it on every one of them. Attackers test stolen credentials on hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on Hallmark and every important account. Even if your password is known, attackers cannot get in without the second factor.
Check your other accounts for this breach
Run a full email check to see every breach your email appears in — not just this one.
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