Trello
MEDIUM RISKData breach — January 2024
In January 2024, data was scraped from Trello and posted for sale on a popular hacking forum. Containing over 15M email addresses, names and usernames, the data was obtained by enumerating a publicly accessible resource using email addresses from previous breach corpuses. Trello advised that no unauthorised access had occurred.
search Check if you were affected — freeData exposed in this breach
What happened in the Trello data breach?
In January 2024, data was scraped from Trello and posted for sale on a popular hacking forum. Containing over 15M email addresses, names and usernames, the data was obtained by enumerating a publicly accessible resource using email addresses from previous breach corpuses. Trello advised that no unauthorised access had occurred.
The exposed data included 3 types of personal information. Learn more about what a data breach means for you.
Quick answer — was Trello hacked?
Yes. Trello was breached in January 2024. The breach exposed 15,111,945 records including email addresses, names, usernames. 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 Trello breach so dangerous?
The Trello breach exposed 15,111,945 records — that is 15.1M people whose personal data is now circulating on the dark web. The combination of email addresses, names, usernames 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 Trello 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
Usernames — used to build profiles and target you with personalised scams
Is the Trello breach still dangerous in 2026?
Yes. Stolen data from the Trello 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 2024 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 Trello 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 Trello breach
Approximately 15,111,945 user records were exposed in the Trello breach in January 2024.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Trello 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 Trello dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Trello 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.
Who was affected by the Trello breach?
The Trello data breach affected approximately 15,111,945 users who had accounts with the service. With 15.1M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with Trello 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 Trello breach
Change your Trello password immediately
Go to Trello 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 Trello 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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