With “File sharing” you can provide access to a given folder via network for other computers. While this can make sense for some circumstances or temporary, it is often forgotten to disable it again. Turn off “file sharing” if this is not needed.
File sharing activates Service Message Block (SMB) protocol and the Apple File Protocol (AFP) which opens several network ports on your Mac and have had some vulnerabilities in the past.
How to fix it
macOS 10.11 – 11.0
- Go to “System Preferences” > “Sharing”
- Disable “File sharing”
Keep in mind: not every security and privacy setting is suitable for everyone. Enhancing the security can lead in losing functionality and/or comfort.
Before making changes, please backup your Mac! Do not make too many change at once. After changing your Mac, check if your normal usage of your Mac has changed in a way which fits to you. Are your really willing to loose some functionality and/or comfort?
Most important is, that you learn and understand what are the advantages and disadvantages of the security settings and that you are aware about the capabilities and risks of your Mac configuration.
To skip this result message from your next security scan, you can deactivate this check. FAQ: How to deactivate a check.
CHECK RESULTS BY SIMPLEUMCHECK DO NOT COVER ALL ASPECTS OF POSSIBLE SECURITY CHECKS OR MAYBE INCORRECT OR INCOMPLETE. THE RESULTS ARE ONLY CLUES FOR RECOMMENDATIONS TO IMPROVE SECURITY AND PRIVACY ON THE MAC.
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