tumblr Data Breach

What happened

In early 2013, tumblr suffered a data breach which resulted in the exposure of over 65 million accounts. The data was later put up for sale on a dark market website and included email addresses and passwords stored as salted SHA1 hashes.

Exposed data

Recommended actions

• Change your tumblr 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 tumblr — attackers weaponise breach data quickly.
• Check whether your email address appears in this breach on haveibeenpwned.com.