AD
Adpost
HighAdpost exposed 3.3M user records including emails and usernames in a 2025 breach.
3,339,512 recordsBreach Feb 14, 2025Updated Dec 17, 2025
Exposed data classes
Fields reported as compromised in this breach record.
Email addressesNamesUsernames
Detailed Analysis
In-depth analysis of the breach and its implications.
In February 2025, Adpost experienced a significant data breach wherein 3,339,512 records containing usernames, display names, and email addresses were exposed. This incident stemmed from an earlier data compromise. Upon discovery, Adpost issued a security notice, enforced a mandatory password reset for all affected users, and initiated additional protective measures.
Impact Analysis
Understanding the scope and consequences of this breach.
- User Impact
- Users may face an increased risk of phishing attacks leveraging the leaked data.
- Business Impact
- The breach potentially undermined user trust and required resources for remediation efforts.
- Affected Sectors
- Online Classifieds
- Geographic Impact
- Global
What You Should Do
Recommended actions to take in response to this breach.
If You Were Affected
- •Reset credentials associated with the Adpost account.
- •Monitor email accounts for suspicious activities.
- •Enable multi-factor authentication (MFA) where available.
Preventive Measures
- •Regularly update passwords and use unique ones for each platform.
- •Remain cautious of unsolicited communications requesting sensitive details.
- •Implement privacy and security best practices on digital platforms.
Frequently Asked Questions
Common questions about this breach and what it means for you.
Utilize services like 'Have I Been Pwned' by entering your email address to verify exposure.