XKCD
Disclosed Sep 1, 20197 years ago561,991 accountsUnverified
In July 2019, the forum for webcomic XKCD suffered a data breach that impacted 562k subscribers. The breached phpBB forum leaked usernames, email and IP addresses and passwords stored in MD5 phpBB3 format. The data was provided to HIBP by white hat security researcher and data analyst Adam Davies.
What is known
| People affected | 561,991 (accounts in the leaked data, per Have I Been Pwned) |
|---|---|
| Disclosed | Sep 1, 2019 |
| Happened | Jul 1, 2019 |
| Attack | Not stated |
| Data exposed | Emails, IP addresses, Passwords |
| Sector | Tech |
| Status | Unverified: not yet confirmed by an official notice, a filing or the organization |
| Check your email | Have I Been Pwned |
Sources
| Source | |
|---|---|
| Have I Been Pwned: XKCDhaveibeenpwned.com · Aggregator | Aggregator |
Notices filed
| Where | Filed | People |
|---|---|---|
| Have I Been Pwnedaccounts in the data | Sep 1, 2019 | 561,991 |
History of this record
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (Have I Been Pwned). Record counts are as reported. Not legal advice.