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Breach occurred 2015-12-14Verifiedquinstreet.com
What happened
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 flashkit.com, codeguru.com and webdeveloper.com (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.
Data exposed
Frequently asked questions
The QuinStreet data breach occurred on December 14, 2015. It was added to Have I Been Pwned's breach catalog on December 17, 2016.
4,907,802 accounts were affected by the QuinStreet data breach, according to Have I Been Pwned's records.
The QuinStreet breach exposed the following data types: Dates of birth, Email addresses, IP addresses, Passwords, Usernames, Website activity.
Yes. Have I Been Pwned has verified the QuinStreet breach, meaning there's confirmed evidence the exposed data is genuine and tied to real accounts.
Use KazaSec's free Email Breach Checker (/tools/breach-check) to check whether a specific email address has surfaced in the QuinStreet breach, or any other known breach — the tool never stores what you search.
Our free Email Breach Checker tells you whether a specific email address has surfaced in this breach — or any other known breach — without ever storing what you search.
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