Symantec's Norton AntiVirus 2013 edition features a patented protection system that scans downloads and prevents suspicious files from infecting the system, scans Facebook news feeds and chat messages for hidden scripts, and identifies worms coming from the Web and removes them promptly at the point of entry. The program is designed to use the computer's resources efficiently for faster scans that won't slow down other programs, such as a media player or an online gaming client. The software's SONAR Behavioral Protection and Live Threat Monitoring constantly scans and detects suspicious activity in the user's computer for 24 hours throughout the week. While surfing the Web, users are protected from phishing scams and other threats because the antivirus software integrates with the web browser, which stops reported attack sites from loading and advises the user not to go any further.