IObit MBR Guard is a small and free tool to protect the MBR from unauthorized modification by malicious software (e.g. ransomware - Petya/GoldenEye). The program is very easy to use - you just need to install it on your computer, run and activate the hard disk sector protection module.

It prevents data loss caused by pests that encrypt the entire contents of the data carrier and then require the user to pay a ransom in order to decrypt it.