BreachForums Version 5 Suffers Data Breach, Exposing 340K User Records
A recent breach of BreachForums version 5, a well-known hacking forum, has been publicly disclosed, compromising sensitive user data. The exposed dataset includes 340,000 unique email addresses, usernames, and Argon2 password hashes, a modern and secure hashing algorithm.
According to reports, 96% of the leaked email addresses were already indexed by LinkedIn and other third-party sources, suggesting widespread prior exposure. The breach highlights ongoing risks associated with underground forums, where threat actors frequently trade stolen data.
The incident underscores the persistent targeting of cybercriminal communities, even as platforms like BreachForums face law enforcement scrutiny. No specific timeline for the breach has been confirmed, but the disclosure serves as a reminder of the vulnerabilities inherent in illicit online marketplaces.
Source: https://www.linkedin.com/feed/update/urn:li:activity:7443120878663495681
BreachAware® cybersecurity rating report: https://www.rankiteo.com/company/breachaware
"id": "BRE1774585528",
"linkid": "breachaware",
"type": "Breach",
"date": "3/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'customers_affected': '340,000 users',
'industry': 'Cybercrime/Underground Marketplace',
'name': 'BreachForums',
'type': 'Hacking Forum'}],
'data_breach': {'data_encryption': 'Argon2 password hashes',
'number_of_records_exposed': '340,000',
'personally_identifiable_information': 'Email addresses, '
'Usernames',
'sensitivity_of_data': 'High',
'type_of_data_compromised': ['Email addresses',
'Usernames',
'Password hashes (Argon2)']},
'description': 'A recent breach of BreachForums version 5, a well-known '
'hacking forum, has been publicly disclosed, compromising '
'sensitive user data. The exposed dataset includes 340,000 '
'unique email addresses, usernames, and Argon2 password '
'hashes. The breach highlights ongoing risks associated with '
'underground forums, where threat actors frequently trade '
'stolen data.',
'impact': {'data_compromised': '340,000 unique email addresses, usernames, '
'and Argon2 password hashes',
'identity_theft_risk': 'High'},
'lessons_learned': 'The incident underscores the persistent targeting of '
'cybercriminal communities and the vulnerabilities '
'inherent in illicit online marketplaces.',
'title': 'BreachForums Version 5 Suffers Data Breach, Exposing 340K User '
'Records',
'type': 'Data Breach'}