As of 2010, Comcast offers Norton Security Suite to its customers at no additional charge for those with an Xfinity Internet subscription. The antivirus protection software is a part of Xfinity's Constant Guard security system. The software is available for download on Windows and Macintosh operating systems.
Online protection from Norton Security Suite safeguards personal computers from trojan attacks and phishing from dangerous spyware. The Constant Guard system extends protection to mobile devices on iOS and Android operating systems, covers identity theft and provides parental control options for the entire family. The security system also offers additional storage backup and password protection.