Breach date: 2025-08-11. Added to this index: 2026-01-10. Accounts affected: about 672K. Domain: breachforums.hn.
What happened
In October 2025, a reincarnation of the hacking forum BreachForums, which had previously been shut down multiple times, was taken offline by a coalition of law enforcement agencies. In the months leading up to the takedown, the site itself suffered a data breach that exposed a total of 672k unique email addresses across all tables, including within forum posts and private messages. The users table alone contained 324k unique email addresses, usernames, and Argon2 password hashes.
Breach data sourced from Have I Been Pwned, used under CC BY 4.0. Additional breach metadata provided by XposedOrNot. DataExposed is an independent service and is not affiliated with or endorsed by either.
What was exposed
Email addresses: The email address you used to register or log in. It is the most common field in breaches because it doubles as your username on most sites.
Forum posts: Posts, threads, replies and sometimes private messages you wrote on an online forum or community board, stored with your username, email address, IP address and posting dates.
Passwords: The secret you use to sign in, stored by the breached service either in plain text, in a scrambled form called a hash, or encrypted. How it was stored decides how quickly it can be recovered.
Private messages: Direct messages, chats and inbox conversations on a platform, which can include photos, links, attachments, addresses, phone numbers and details you shared expecting only one person to read.
Usernames: The handle or login name you chose for an account, which may be public on forums, games and social platforms or used privately to sign in.
What to do now
Check whether your own address is in this dataset with the free email breach check.
Change the password on this service and every other site where you used the same password.
Turn on two-factor authentication on your email account first, because it is the reset path for everything else.
Treat calls and messages that quote real details about you as hostile until you verify them another way.
Frequently asked questions
What data was leaked in the BreachForums (2025) breach?
The BreachForums (2025) breach exposed Email addresses, Forum posts, Passwords, Private messages, Usernames. About 672K accounts were affected.
Was I affected by the BreachForums (2025) breach?
Run the free email breach check with the address you used on that service. It will tell you whether your address appears in this dataset.
What should I do about the BreachForums (2025) breach?
Change the password on that account and everywhere you reused it, then turn on two-factor authentication. Passwords from this breach are traded and tried automatically against other sites.