Hackers have stolen and posted on line more than two million passwords for social media accounts, Gmail and Twitter, according to the BBC. The massive data breach was a result of key-logging software maliciously installed on an untold number of computers around the world, researchers at cybersecurity firm Trustwave said. The virus was capturing log-in credentials for key websites over the past month and sending those usernames and passwords to a server controlled by the hackers. The ninth top domain from which passwords were stolen was Automatic Data Processing, Inc. (ADP), which is one of the largest providers of payroll services to most Fortune 500 businesses and at least 620,000 business organizations worldwide.