Do you need AntiVirus for mac? and SpywareMalware softwares?

Is there a surefire way to find and remove malware and spyware on Mac OS? Thanks so much!

This person would've had access to both my iPhone and my MacBook. Is there something I can do to detect if there's spyware installed on either one?

You can run Bitdefender. The free version is available on Apple's App Store. I have been using Bitdefender for several years and it is very efficient, simple ...

You will even find a built in privacy report in Safari, which tells you which website providers and identifiers the website you are visiting ...

The easy way, download and install Malwarebytes, Bitdefender, Avast, or a legitimate and known antivirus, and use that. Or, shut down your Mac, ...

Step one check what is starting on the Mac. Start KnockKnock and run scan. Mac malware is not sophisticated so chances are it will pop up then an there.

Erase your Mac and reset it to factory settings. Use Erase All Content and Settings to erase all settings, data and apps quickly and securely.

Use MalwareBytes to scan your computer (it does a fine job of removing known macOS malware, including adware and other obnoxious unwanted ...

I have used the free version of Malwarebytes and CleanMyMac X before to search for a virus on my mac, but neither showed any signs of a virus.

No. Do not install antivirus apps on your Mac. Ask any long-time Mac user this question, and they will always say no.