Night Sky

Night Sky is a type of malware that is designed to extort money by using blackmail thanks to its sophisticated ability to lock all personal files on a Windows computer or its network. It uses the double extortion model in its attacks. First, it demands corporate victims pay for a decryption key to get at their files, then it slaps them with the threat of either leaking all the stolen data or selling it to the highest bidder should victims refuse to pay.