Facebook started buying  passwords on the digital black market to protect users from harm. Safety of user accounts is a primary concern for any website, and Facebook is no different. In order to keep its user accounts safe, the high-tech company is buying passwords that hackers sell on the black market. With more than 1.3 billion people use Facebook every day, safety is becoming more and more important. Passwords are stolen and traded on the black market for a lot of money, and Facebook is considering a switch in how to redefine security to keep its user accounts safe. “Usernames and passwords are an idea that comes out of 1970s mainframe architectures, they were not built for 2016.”