What was exposed, when it happened, and which databases confirm it.
- accounts
- 4,907,802
- Breached
- December 14, 2015
- Last Update
- December 17, 2016
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
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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.
Compromised Info
- Dates of birth
- Email addresses
- IP addresses
- Passwords
- Usernames
- Website activity
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- HIBP
FAQ
What was leaked in the QuinStreet breach?
The QuinStreet breach exposed: Dates of birth, Email addresses, IP addresses, Passwords, Usernames, and Website activity.
When did the QuinStreet breach happen?
The QuinStreet breach was disclosed on December 14, 2015 and affected 4,907,802 records.
Am I affected by the QuinStreet breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the QuinStreet leak.