As ransomware exists in our computer society more and more frequently, I have been wondering what can be done. This is the statement made by a Malwarebytes researcher after the Garmin ransomware meltdown:

That says to me, UNPLUG your Time Machine disk when you are not using it. That will preserve your data that needs to be reloaded, and prevents it from being affected!

Frank Croft

Comments from John S Carter:

I completely agree. However, I am not in the habit of disconnecting my Time Machine Drive - but will start doing so. Since, for me, I do not see any reason to have even day-to-day updates, I will connect my Time Machine drive just once a week to get a backup and also after any new OS update. Keeping app updates in Time Machine are not that critical since any app can be easily reinstalled and updated.

When you are not using your computer and leaving it powered on, it might be a good idea to disconnect from the Internet completely (but leaving Bluetooth enabled). That also keeps you from being distracted by “You Have Mail” and other notifications besides keeping your computer safe from possible hacks getting through your modem and computer firewalls.

I use Sophos Home (free) which has some useful degree of malware and virus protection. The paid version also protects against all other possible forms of intrusions.