ANY message telling you your Mac, iPad, or iPhone is
  infected is a Blatant LIE. No one can tell that from
  outside your Mac, iPad, or iPhone.
0. Recovery (if necessary)
   Startup Options 
   http://edu-observatory.org/olli/Manage/Startup.html   
1. Ensure that macOS is up2date
   https://support.apple.com/en-us/HT201222
   The single most important action you can take to improve
   your security and minimize your risk is to do all the
   updates (and upgrades).
  
  
2. Clear (browser) History and Website Data...
   http://edu-observatory.org/olli/Manage/Browser_History.html   
 
   Clearing (browser) History and Website Data removes links
   to any malicious websites - That's important. 
3. Download, Install, and run Malwarebytes (free) daily to 
   mitigate malware we get tricked into downloading.
   https://www.malwarebytes.com/mac-download/   
   Proven Malwarebytes technology crushes the growing threat
   of Mac malware, including thorough malware, spyware, and
   virus removal. Finally, cybersecurity smart enough for the
   Mac.
 
  
4. Download, Install, and run CleanMyMac (not free) 
   daily followed by a Restart (without re-opening any windows)
   of your Mac
   https://macpaw.com/cleanmymac
  
   CleanMyMac is all-in-one package to awesomize your Mac.
   It cleans megatons of junk and makes your computer run
   faster. Just like it did on day one.
 
     
5. Download, Install, and run AppCleaner (free) as needed
   http://www.freemacsoft.net/appcleaner/
  
   AppCleaner is a small application which allows you to
   thoroughly uninstall unwanted apps. Installing an
   application distributes many files throughout your System
   using space of your Hard Drive unnecessarily. AppCleaner
   finds all these small files and safely deletes them.
   Remove any Apps that Bad Guys tricked you into installing
   (such as Team Viewer). Remove any third party apps you
   installed that you no longer need. Make sure all your 
   remaining apps are up2date. 
   Check for unwanted browser extensions. For example: 
   Safari > Preferences > Extensions and disable anything that
   should not be there.
6. Protect your Mac from malware
   https://support.apple.com/guide/mac-help/protect-your-mac-from-malware-mh40596/mac   
   
   macOS has many features that help protect your Mac and your
   personal information from malicious software, or malware.
   One common way malware is distributed is by embedding it in
   a harmless-looking app.
   You can reduce this risk by using software only from
   reliable sources. The settings in Security & Privacy
   preferences allow you to specify the sources of software
   installed on your Mac.
7. Change any compromised passwords
   http://edu-observatory.org/olli/Manage/Passwords.html   
   Change the password on any compromised account. New
   paswords should be unique, long, and preferable randomly
   generated. 
8. Review Phishing
   http://edu-observatory.org/olli/Manage/Phishing.html   
   Computers don't get hacked without your participation. Do
   not respond to phishing attempts.
   
9. Objective-see Security Tools (free)
   https://objective-see.com   
   Objective-See was created to provide simple, yet effective
   macOS security tools. Always free of charge - no strings
   attached!
      
      
   
 
    sam.wormley@icloud.com