Breach date: 2022-12-03. Added to this index: 2023-03-02. Accounts affected: about 565K. Domain: gunauction.com.
What happened
In December 2022, the online firearms auction website GunAuction.com suffered a data breach which was later discovered left unprotected on the hacker's server. The data included over 565k user records with extensive personal data including email, IP and physical addresses, names, phone numbers, genders, years of birth, credit card type and passwords stored in plain text. The leaked identities could subsequently be matched to firearms listed for sale on the website.
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
Browser user agent details: A short text string your browser sends to every website, naming the browser, its version, the operating system and often the device type, for example Chrome on Windows or Safari on an iPhone.
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.
Genders: The gender or sex recorded on your profile, usually picked from a list at signup, sometimes with a title such as Mr or Ms or a gender identity option beyond male and female.
IP addresses: The network addresses your devices used when you signed up, logged in or posted, recorded by almost every website in its access logs.
Partial credit card data: Fragments of a payment card rather than the full number, typically the first six or last four digits, the card brand, the expiry date or the cardholder name.
Partial dates of birth: Part of your date of birth, such as the day and month without a year, or a birth year on its own. Social apps often store it for birthday reminders or age checks.
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.
Phone numbers: Your mobile or landline number, collected at signup for contact, delivery updates, marketing and two-factor codes.
Physical addresses: Your residential, postal, billing or delivery address, stored by retailers, utilities, banks, government services and almost any company that sends you something.
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 GunAuction.com breach?
The GunAuction.com breach exposed Browser user agent details, Email addresses, Genders, IP addresses, Partial credit card data, Partial dates of birth, Passwords, Phone numbers, Physical addresses, Usernames. About 565K accounts were affected.
Was I affected by the GunAuction.com 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 GunAuction.com 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.