Loading
Loading
We use strictly necessary cookies to run this site, and analytics cookies to understand how it's used. See our Privacy Policy for details.
Breach occurred 2025-02-14Verifiedadpost.com
What happened
In February 2025, data obtained from an earlier Adpost breach surfaced. The dataset contained 3.3M records including email addresses, usernames, and display names. Adpost later published a disclosure notice and advised they'd forced a credential refresh, among other actions.
Data exposed
Frequently asked questions
The Adpost data breach occurred on February 14, 2025. It was added to Have I Been Pwned's breach catalog on October 7, 2025.
3,339,512 accounts were affected by the Adpost data breach, according to Have I Been Pwned's records.
The Adpost breach exposed the following data types: Email addresses, Names, Usernames.
Yes. Have I Been Pwned has verified the Adpost 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 Adpost 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.
Check your email →Talk to us about this
We help organizations find and fix the gaps that lead to a breach, before they do.