This time, the malicious software had infected an app distributed by Transmission, an open source program for a file sharing protocol called BitTorrent. It was downloaded by about 6,500 people before it was quickly shut down by Apple. The ransomware stays hidden for three days before it activates and begins to encrypt the files on the computer. The owner of an infected computer would find their files locked up and be asked to pay one bitcoin (about $400) to regain access. Apple computers have long been considered above the fray in issues related to hacking because few viruses and other malicious software are written for them. The Transmission file sharing app was not available on the Mac Apple app store and the company warned about the security issues that can come from buying apps outside of Apple’s control.