Twitter, Tumblr and Pinterest user information leaked in hacker attack

February 22, 2013 (WLS) -- Twitter, Tumblr and Pinterest users might need to change their passwords after a hacker attack.

Some user information from the three popular social networking websites was compromised after hackers breached the customer support service Zendesk.

Company officials say that the attackers downloaded email addresses of users who contacted them for support.

Zendesk is reaching out to any affected customers.

They say that the security hole has been identified and patched.

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