ConfirmedData breach

Adpost: a data breach

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.

The record

Organisation
Adpost
Identity
Adpostidentified by its domain in a verified breach record
Records affected
3,339,512 records
Data exposed
Email addresses, Names, Usernames
Sector
Not recorded
Occurred
2025-02-14
Disclosed
2025-10-07
First recorded here
2026-09-09

Sources (1)

One source so far.

  1. Have I Been PwnedFirst reported

    2025-10-07