2026 BreachForums — ~324k forum user rows leaked (reboot DB; Jan)
Data compromised
Forum usernames, registration metadata, IP addresses in subset per analyses
Technical writeup
In January 2026, archives attributed to a BreachForums “V5” / post-reboot instance circulated publicly, with BleepingComputer and The Register describing roughly 324,000 forum member rows (e.g., MyBB-style exports) alongside operational artifacts. Analysts and outlets characterized the leak as stemming from operational mistakes during forum maintenance (e.g., exposed backup) rather than a novel exploit chain, while still creating exposure for usernames, registration metadata, and IP addresses where present. The incident is distinct from earlier BreachForums operator law-enforcement actions and prior generation forum DB leaks.
Root cause
Operational exposure of forum database backup during restoration/maintenance (per press and analyst summaries)