What was exposed, when it happened, and which databases confirm it.
- accounts
- 3,339,512
- Breached
- February 14, 2025
- Last Update
- October 7, 2025
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
What happened
In February 2025, data allegedly obtained from an earlier Adpost breach surfaced. The dataset contained 3.3M records including email addresses, usernames, and display names. Multiple attempts to contact Adpost regarding the incident received no response.
Compromised Info
- Email addresses
- Names
- Usernames
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 Adpost breach?
The Adpost breach exposed: Email addresses, Names, and Usernames.
When did the Adpost breach happen?
The Adpost breach was disclosed on February 14, 2025 and affected 3,339,512 records.
Am I affected by the Adpost breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the Adpost leak.