Access this feature at:
Tools → SafeZone
SafeZone is especially designed to protect sensitive data when you bank or shop online. It enables you to browse the web in a secure environment that is invisible to the rest of your system. It prevents any hidden spyware from collecting your private information.
When you visit a banking or shopping site recognized by Avast, or a site in your custom list, by default you are prompted to use the SafeZone browser.
To open the SafeZone manually:
When you end the session, your browser settings and any files downloaded are saved and will be available the next time you open SafeZone.
You can set preferences for the SafeZone in:
Settings → Tools → SafeZone → Customize