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TU

tumblr

High

Breach of 65M Tumblr accounts in 2013, exposing emails and hashed passwords.

Records exposed
65,469,298 records
Breach date
Breach Feb 28, 2013
Last update
Updated May 29, 2016
Source

What data was exposed?

Fields reported as compromised in this breach record.

Email addressesPasswords

Why does this breach matter?

In-depth analysis of the breach and its implications.

In February 2013, the online platform Tumblr experienced a data breach impacting 65 million user accounts. Information compromised included email addresses and passwords hashed using the salted SHA-1 algorithm. The exposed data was later listed for sale on a dark web marketplace.

Impact Analysis

Understanding the scope and consequences of this breach.

User Impact
Users' email addresses and hashed passwords were exposed, potentially leading to account hijacking or credential reuse attacks.
Business Impact
Tumblr experienced reputational damage and a need to implement stronger security measures and user notifications.
Affected Sectors
  • Online Services
Geographic Impact
  • Global

What You Should Do

Recommended actions to take in response to this breach.

If You Were Affected

  • •Change your Tumblr password immediately.
  • •Check if the exposed password was reused elsewhere and update those accounts.
  • •Enable two-factor authentication for additional security.

Preventive Measures

  • •Use unique passwords for each online service.
  • •Implement account monitoring and alerts for unusual activities.
  • •Adopt password managers to securely manage credentials.

Frequently Asked Questions

Common questions about this breach and what it means for you.

Over 65 million accounts were compromised, exposing email addresses and salted SHA-1 hashed passwords.