Ideally you have one or more types of properly updated
anti-malware software running on your computers and networks.
Not exact matches
The options Windows computers are prone to infections so you must
run anti-malware software on them.
But while we wait for those updates, basic computer security can go a long way: use HTTPS wherever you can, don't use the default passwords on your devices,
run antivirus and
anti-malware, and update your
software as soon as you get that notification.
It is a secondary
anti-malware software whose goal is to
run alongside your main antivirus and offer an additional layer -LSB-...]
The only way to know for sure if your computer is infected is to
run scans using antivirus or
anti-malware software.