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Avast Mac Security offers three shields and on-demand scanning. Our Web Shield and Mail Shield combine to check the vast majority of incoming data from the Internet, while File Shield scans all programs stored and executed from your hard drive. Everything is packed in a brand new GUI.

  • On-screen alerts
  • On-demand scanning
  • Web Shield, Mail Shield, File Shield
  • Automatic virus definition updates

Please note that Avast will not run properly if you have other antivirus software installed.

What's New

Version 12.9:

Note: Now requires OS X 10.9 or later.

  • Added support for macOS 10.13 High Sierra.
  • Fixed possible deadlock in Web Shield.
  • Fixed issues with IPv6 to IPv4 fallback.
  • Fixed scan reports issues on macOS 10.6 and 10.7.
  • Fixed custom scans scanning excluded folders.


  • OS X 10.9 or later

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Avast Mac Security User Discussion

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3.1 54


Current Version (12.x)


Downloads 56,986
Version Downloads 203
License Free
Date 22 Sep 2017
Platform Intel 64 / OS X
Price Free