HTML files may contain malicious content for a number of reasons. The files may have been specially crafted to be intrinsically malicious, or they may be legitimate HTML files that have been infected by threats such as W32.Ramnit
. The files may be downloaded on to the computer during Web browsing, by other malware, inside archive files, and through various other methods.
With the Web browser now used for online shopping, banking, social networking, and entertainment, it has become one of the most popular targets for attackers. The attack surface is large, with third-party plugins and extensions that extend browser capabilities also being vulnerable to attack. Browser compromise can therefore be the cause of some of the most significant security breaches and hence can cause a great deal of harm to compromised computers and the victims of the attacks.
- Exploit browser and plugin vulnerabilities to run arbitrary code
- Display fake antivirus scans and other fraudulent information
- Hijack browsing sessions
- Redirect users to malicious websites
- Steal information
If a Symantec antivirus product displays a detection alert for this threat, it means the computer is already protected and the Symantec product will effectively remove this threat from the computer.
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.