These help files have been created to help you understand how the program works as a whole, as well as describing the properties and functions of its component parts. We assume the user has knowledge of basic terms and the basic skills needed to use the Windows operating system. If you are not familiar with terms such as "folder", "file", or "window", or what it means to "activate a window" or "click a button", we recommend that you consult the appropriate user manual before proceeding.

Based on the award-winning avast! antivirus engine, avast! antivirus 5.0 contains all of the features you would expect in a modern antivirus program. It incorporates anti-spyware technology certified by West Coast Labs' Checkmark process, as well as anti-rootkit and strong self-protection capabilities, but now provides even faster scanning with improved detection ability. It contains several real-time "Shields" which continuously monitor your email and internet connections and check the files on your computer whenever they are opened or closed.

- Continuous protection against viruses and spyware
- Ensures all mails sent and received are clean
- Keeps you protected from "chat" infections
- Stops attacks from hijacked websites
- Lets you safely browse suspicious websites or run unknown applications
- Allows safe and uninterrupted gaming