It’s a good idea to not just back up to a local drive but additionally use a reputable cloud-based storage and backup service. If you back up to a drive attached to your PC, when your PC gets infected with ransomware, the backup drive will likely be encrypted along with any other disks inside or attached to your PC. Cloud backups are generally less vulnerable but not wholly immune to ransomware attacks.
Make sure that your backup service uses versioning — that is, it keeps not just the current version of each of your files, but previous ones as well. That way, if the most current version of your files gets infected, you can restore from previous versions. Most popular backup and storage services, including Microsoft OneDrive, Google Drive, Carbonite, Dropbox, and many others, use versioning. It’s a good idea to get familiar with the versioning feature of whichever service you use now, so you can easily restore files in a pinch.
Some services, including OneDrive and Google Drive, now offer ransomware detection. Users are notified of suspicious activity and can use the vendors’ tools to remove infected files and restore older versions.
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