There is a type of assault on computers that involves encrypting your files and then demanding a ransom to have them decrypted. Doing back-ups of your important data goes a long way to protect you but only if the storage media is not continuously connected to your PC. I use an external drive to do back-ups at the same time every day. These back-ups take no longer than 2 hours. So I need this external drive on the network for these 2 hours but off of the network the rest of the time. My solution - plug the external drive's power supply into a lamp timer. For added protection, you could have a second lamp timer set to power down your modem during the time that the external drive is powered up.