Door number 8

Get rid of unused programs

It can be assumed that there are bugs and vulnerabilities in all software (see door number 6).

The number of possible entry points for attackers can therefore be reduced by only installing the programs you need on your computer and mobile devices.

So, simply delete the apps from your mobile device or the programs from your computer that you don't use (anymore). For all others, turn on automatic updates if possible (see door number 6). Maybe right now?