Keeping your backups automated and your backup drive connected guarantees protection from the first two: the two you’re most likely to encounter. You run an even smaller risk of that ransomware being the encrypt-your-backups variant.You run a smaller risk of that malware being ransomware.You run some risk of encountering malware.Just because backup-encrypting ransomware exists doesn’t mean it’s what you’re most likely to encounter. Here’s the thing: not everything has the same risk. It’s still not as common as the “quick and easy” ransomware that relies on people who aren’t backed up. There’s more “next-level” ransomware now than there was when this article was originally written. As someone pointed out, the entire image doesn’t need to be encrypted encrypt just the first part, and the entire image could be rendered useless. There is ransomware out there that does encrypt files on drives other than C:, including network and external drives, as well as explicitly encrypt backup images. For practical reasons, then, it’s not in the malware’s best self-interest to attempt it. Encryption takes time and can adversely impact system performance. Backups - particularly backup image files - are often very large and can take a long time to encrypt. Ransomware wants to stay hidden as long as possible while encrypting your data so it can complete the job undetected. Backup files are usually kept on a drive other than C: - your external drive.Macrium’s “.mrimg” files would be one example.
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