Adpost Data Breach

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.

Exposed data

Recommended actions

• Watch for targeted phishing emails referencing Adpost — attackers weaponise breach data quickly.
• Check whether your email address appears in this breach on haveibeenpwned.com.