In approximately late 2015, the maker of "performance marketing products" QuinStreet had a number of their online assets compromised. The attack impacted 28 separate sites, predominantly technology forums such as, and (view a full list of sites). QuinStreet advised that impacted users have been notified and passwords reset. The data contained details on over 4.9 million people and included email addresses, dates of birth and salted MD5 hashes.

Accounts breached: 4907802

Breached on: December 14, 2015

Exposed data: Dates of birth, Email addresses, IP addresses, Passwords, Usernames, and Website activity


Added on: December 17, 2016

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