On Tuesday a notorious hacker and cyber criminal put over 200 million Yahoo user accounts up for sale on the Dark Web marketplace in exchange for Bitcoins. In recent months over 1 billion user credentials from popular social networking sites, including LinkedIn, Tumblr, MySpace and VK.com have been exposed online. The Hacker News reports: Now, the same hacker who was responsible for selling data dumps for LinkedIn, MySpace, Tumblr and VK.com is now selling what is said to be the login information of 200 Million Yahoo! users on the Dark Web. 200 Million Yahoo! Logins for 3 BTC The hacker, who goes by the pseudonym “Peace” or “peace_of_mind,” has uploaded 200 Million Yahoo! credentials up for sale on an underground marketplace called The Real Deal for 3 Bitcoins (US$1,824). Yahoo! admitted the company was “aware” of the potential leak, but did not confirm the authenticity of the data. The leaked database includes usernames, MD5-hashed passwords and date of births from 200 Million Yahoo! Users. In some cases, there is also the backup email addresses used for the account, country of origin, as well as the ZIP codes for United States users. Easily Crackable Passwords Since the passwords are MD5-encrypted, hackers [...]