Apple Security vs Malware/Spyware

We have over literally over 20 Apple devices in our home (and on our network) and I am considering working part-time contract work online. I need to know what Apple recommends as the best cybersecurity for your devices? I do not want background apps being loaded without my permission, other malware / spyware or any other things that would compromise our systems &/or devices or information. Is there something that would be best for the MacBook Pros or something that could protect the network as a whole?
The perfect filter does not exist. Even big companies have been compromised (I read that Xcode itself had been compromised in China 5 or 6 years ago).

What I would do (and try to do myself):
  • be cautious on the apps you download

  • organise rolling backup of your important stuff (at least on 2 different physical support, where you alternate successive backups)

  • apply a very strict discipline never to open a mail attachement if you are not 120% sure it is OK

  • update OS to the last available security patches

  • if one day you fear a machine has been compromised, immediately disconnect from the network and quarantine.

Apple Security vs Malware/Spyware
 
 
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