Data breach

GunAuction.com data breach

565,470 accounts · breached December 3, 2022

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.

Description by Have I Been Pwned

What data leaked

  • Browser user agent details
  • Email addresses
  • Genders
  • IP addresses
  • Partial credit card data
  • Partial dates of birth
  • Passwords
  • Phone numbers
  • Physical addresses
  • Usernames

What to do if you had an account

  1. Change the password. Change your password on this service. If you used the same password anywhere else, change it there too: attackers try leaked email and password pairs on other sites automatically. A password manager makes one unique password per site practical.
  2. Turn on two-step sign-in. Enable two-factor authentication where the service offers it, preferably with an authenticator app or a passkey. A leaked password alone is then not enough to get in.
  3. Expect targeted phishing. Leaked contact details are used to write convincing fake messages that mention the breached company or your real name. Do not click links in unexpected emails or texts about this account; go to the site by typing its address.
  4. Watch for scam calls and SIM swaps. Be suspicious of calls and texts that claim to be from your bank or a courier. Ask your mobile operator for a port-out or SIM-change PIN if it offers one.
  5. Check your bank statements. Review recent card and account transactions and report anything you do not recognise. If full card numbers were exposed, ask your bank to replace the card.
  6. Guard against identity fraud. Identity documents and dates of birth cannot be changed like a password. Consider a credit freeze or fraud alert where your country offers one, and be wary of anyone who 'verifies' you using those details.

Check your email at haveibeenpwned.com

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