Email Scanning
Software that automatically scans your emails for viruses.
Firewalls
Firewalls are designed to prevent unauthorized activity on a server or between a network, and protect the internal network from hackers or intruders that might try to use the Internet to break into your system(s) to access files or harm your computer.
Spyware
Software that gets downloaded to your computer from sites on the Internet and by downloading other applications. It spies on your actions (ie., programs you use and sites you visit) and sends the information to whoever it wants.
Adware
Controls advertisements that you see, increasing pop-ups and forwarding you to ad sites.
Silent/Automatic Updating
An antivirus feature that updates your software automatically without you noticing.