XKCD
forums.xkcd.com
About This Breach
The popular webcomic site XKCD suffered a data breach in 2019, that exposed the personal information of its forum users. The breach occurred due to a vulnerability in the forum software that was exploited by hackers. As a result, user data, including usernames, email addresses, hashed passwords, and IP addresses, was compromised.
Data Exposed
Breach Details
| Breach Type | Data Breach |
| Searchable | Yes |
| Verified | Yes |
| Sensitive Data | No |
| Reference | https://www.bleepingcomputer.com/news/security/xkcd-forum-breach-exposes-emails-passwords-of-562-000-users/ (opens in new tab) |
Frequently Asked Questions
When did the XKCD data breach happen?
XKCD was breached in Jul 2019. The breach was added to the XposedOrNot index on November 8, 2023.
How many records were exposed in the XKCD breach?
562,026 records were exposed, making it the #489 largest of the 763 breaches in our index.
What data was exposed in the XKCD breach?
The exposed data includes: Email addresses, Usernames, Passwords, IP addresses.
What should I do if I was affected by the XKCD breach?
Change your password on the affected service (and anywhere you reused it), turn on two-factor authentication, and set up free breach alerts on XposedOrNot so you know the moment your email appears in a new breach.
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What Should You Do?
Change Your Passwords
Update your password immediately, using 12+ characters with numbers and symbols.
Enable Two-Factor Authentication
Add 2FA on all supported accounts using an authenticator app like Google Authenticator or Authy.
Review Device Security
Update your devices and browsers, and check for unauthorized logins.
Monitor Your Accounts
Set up login alerts and review account activity regularly for suspicious access.
Use a Password Manager
Never reuse passwords: use a password manager to generate unique ones for each account.