New file system shield scans files upon their execution and write. It's possible to set a list of files and/or directories which won't be scanned by the file system shield.
New web shield transparently scans all traffic related to browsing web pages (port 80). It even supports IPv6 connections.
The mail shield transparently scans all emails sent and received by email client applications. If a mailbox is accessed using a secure connection (SSL), it's necessary to configure your email client and the mail shield to support this kind of connection (the mail shield serves as a proxy email server).
Scan the full file system or choose to scan a folder or a removable device.
avast! Free Antivirus 7.0 for Mac contains the same engine as its Windows counterpart.
WebRep clients are automatically (optionally) installed to Safari, Chrome and Firefox browsers.
Previous version doesn't update program files automatically avast! Free Antivirus 7.0 for Mac program files and virus definitions are updated automatically.