I know just enough about technology to be dangerous.
On another forum I visit a poster mentioned that he air gaps his Macbook from the internet once a day, then runs a virus scan. Once that's done, he backs up his Macbook via Apple's Time Machine app before reconnecting to the internet.
I am always on the lookout to improve my security and found this practice intriguing. I sent the poster these questions; however, he gave me a non-responsive answer and so I thought I would ask here.
-- I've read that air gapping is a pretty extraordinary security practice. Is there a particular reason for using it - especially on a Mac (which is supposedly less vulnerable than other platforms)?
-- To air gap your laptop, do you simply disconnect from the internet or is there something more involved?
-- I was under the impression that air gapping is something you do 100% of the time (i.e., you never connect to the internet or network). Is it effective if you are only doing it for a few minutes a day? For example, if the laptop was infected by a virus, isn't likely or possible the virus will "bury" itself on the laptop and be undetected by the virus scan regardless of whether it's connected to the internet or not?
A question I didn't ask, but thought of later:
-- If your network (modem and/or router) were compromised, wouldn't that make air gapping the laptop a moot point?