Breach date: 2008-07-01. Added to this index: 2016-05-31. Accounts affected: about 359M. Domain: myspace.com.
In approximately 2008, MySpace suffered a data breach that exposed almost 360 million accounts. In May 2016 the data was offered up for sale on the "Real Deal" dark market website and included email addresses, usernames and SHA1 hashes of the first 10 characters of the password converted to lowercase and stored without a salt. The exact breach date is unknown, but analysis of the data suggests it was 8 years before being made public.
Breach data sourced from Have I Been Pwned, used under CC BY 4.0. Additional breach metadata provided by XposedOrNot. DataExposed is an independent service and is not affiliated with or endorsed by either.
The MySpace breach exposed Email addresses, Passwords, Usernames. About 359M accounts were affected.
Run the free email breach check with the address you used on that service. It will tell you whether your address appears in this dataset.
Change the password on that account and everywhere you reused it, then turn on two-factor authentication. Passwords from this breach are traded and tried automatically against other sites.