GunAuction.com
HIGH RISKData breach — December 2022
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.
search Check if you were affected — freeData exposed in this breach
What happened in the GunAuction.com data breach?
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.
The exposed data included 10 types of personal information. Because passwords were exposed, users who reused their password on other sites are at particular risk. Learn more about what a data breach means for you.
Quick answer — was GunAuction.com hacked?
Yes. GunAuction.com was breached in December 2022. The breach exposed 565,470 records including browser user agent details, email addresses, genders. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the GunAuction.com breach so dangerous?
The GunAuction.com breach exposed 565,470 records — that is a large number of compromised accounts. The combination of browser user agent details, email addresses, genders makes this a high-risk breach that requires immediate action.
Because passwords were exposed, attackers can use credential stuffing to automatically test your GunAuction.com password against hundreds of other websites. If you reused your password anywhere, those accounts are now at risk. Read more about what happens to your data after a breach.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the GunAuction.com breach?
Browser user agent details — may be combined with other breach data to build a profile for targeted attacks
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Genders — may be combined with other breach data to build a profile for targeted attacks
IP addresses — combined with other data, used for identity theft and physical fraud
Partial credit card data — can be used for direct financial fraud and unauthorised transactions
Partial dates of birth — used to verify identity for account takeover and fraud
Passwords — can be used to access your accounts directly or cracked to reveal your actual password
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Physical addresses — combined with other data, used for identity theft and physical fraud
Usernames — used to build profiles and target you with personalised scams
Is the GunAuction.com breach still dangerous in 2026?
Yes. Stolen data from the GunAuction.com breach remains dangerous years after the incident. Research shows that over 65% of stolen credentials from older breaches have never been changed by the account holders. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2022 are still actively used in credential stuffing attacks today.
Personal information like email addresses, phone numbers, and dates of birth never expire. Even if you changed your GunAuction.com password, the other exposed data can be combined with information from other breaches to target you. Learn more about how long stolen data stays dangerous.
Frequently asked about the GunAuction.com breach
Approximately 565,470 user records were exposed in the GunAuction.com breach in December 2022.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your GunAuction.com password elsewhere and haven't changed it, those accounts remain at risk today.
Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full GunAuction.com dataset and tell you instantly whether your email was exposed and what data was taken.
Change your GunAuction.com password immediately, change any other account where you used the same password, enable two-factor authentication on all important accounts, and monitor for phishing emails over the next 90 days.
Who was affected by the GunAuction.com breach?
The GunAuction.com data breach affected approximately 565,470 users who had accounts with the service. While not the largest breach on record, it still represents a significant number of compromised accounts in our database of 970+ known breaches.
If you ever created an account with GunAuction.com or used their services, your data may have been included in this breach. Check your email now to find out. You can also read our guide on what to do immediately after a data breach.
If your email was in the GunAuction.com breach
Change your GunAuction.com password immediately
Go to GunAuction.com and change your password right now. Use a strong, unique password that you have never used anywhere else.
Change any account sharing that password
If you used the same password on other sites, change it on every one of them. Attackers test stolen credentials on hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on GunAuction.com and every important account. Even if your password is known, attackers cannot get in without the second factor.
Check your other accounts for this breach
Run a full email check to see every breach your email appears in — not just this one.
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