ESET protects you against Petya

The Petya malware attacks a computer's MBR (master boot record), a key part of the startup system. If the attack is successful, the computer user then receives a message that the files have been encrypted, with a demand that a ransom be paid to release them.

On June 27, 2017, a ransomware attack known as Petya (detected by ESET as Win32/Diskcoder.C Trojan) began spreading rapidly around the globe.

When WannaCry touches a user’s computer, it encrypts all its files, effectively locking them up and making them unavailable to the victim. A ransom is demanded in the form of Bitcoin in exchange for restoring access to the files. The price for unlocking the data and hardware increases with time. If the payment isn’t made by the deadline, the computer is rendered permanently inaccessible.

On May 12, 2017, a ransomware attack known as WannaCry (detected by ESET as Win32/Filecoder.WannaCryptor.D) spread rapidly across the globe.