MangaDex Data Breach

What happened

In March 2021, the manga fan site MangaDex suffered a data breach that resulted in the exposure of almost 3 million subscribers. The data included email and IP addresses, usernames and passwords stored as bcrypt hashes. The data was subsequently circulated within hacking groups.

Exposed data

Recommended actions

• Change your MangaDex password immediately, and update it anywhere you reused the same password.
• Enable two-factor authentication on the affected account and on your critical services (email, banking).
• Watch for targeted phishing emails referencing MangaDex — attackers weaponise breach data quickly.
• Check whether your email address appears in this breach on haveibeenpwned.com.