Data breaches in 2011

10 known data breaches are dated 2011, together exposing around 69 million accounts — the biggest being Tianya. Browse them below to see what was leaked, or check your own email in seconds.

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Were you caught up in a 2011 breach?

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Common questions

2011 data breaches, answered

How many data breaches were there in 2011?

We track 10 known, verified data breaches dated 2011, together exposing around 69 million accounts. The largest was Tianya (29 million accounts).

Was my email exposed in a 2011 breach?

Check your email free against known breach and dark-web databases — it tells you which breaches, including any from 2011, include your address and what was exposed.