In addition to Tumbler being hit by a data breach possibly in 2013, 360 million MY SPACE user accounts were potentially compromised around possibly the same timeframe.  Long term users are requested to select a new password for their accounts and to change other accounts if they used the same password on other sites.

http://www.ibtimes.com/myspace-accounts-hacked-time-inc-confirms-massive-breach-360-million-passwords-sale-2376092

Over 360 million Myspace credentials are being sold to the highest bidder on the dark web as Time Inc. confirmed the once-popular social network was the victim of a massive “hacking incident.”  Time Inc., which acquired the Myspace brand through its purchase of data-marketing company Viant in February, said in a statement Tuesday that its security team was informed shortly before the Memorial Day weekend that stolen Myspace-user login data was being made available in an online hacker forum.

While most of the affected accounts likely haven’t been accessed for quite a long time, their owners will still be at risk if they have reused the same email/password combination for accessing other online services like email, banking and shopping.  It remains unclear when the breach took place, with Time Inc. simply saying the compromised data is limited to “a portion of Myspace usernames, passwords and email addresses” from prior to June 11, 2013. Myspace was the world’s biggest social network in the years from 2003 to 2008, with a valuation of $12 billion, but it was eventually eclipsed by Facebook and Twitter.