In the left part of the window, in the Anti-Virus protection section, select the Web Anti-Virus subsection.
In the right part of the window, the settings of the Web Anti-Virus component are displayed.
In the Security level section, click the Settings button.
The Web Anti-Virus window opens.
Select the General tab.
If you want Web Anti-Virus to use heuristic analysis to scan web traffic for viruses and other malware, in the Scan methods section, select the Heuristic analysis for detecting viruses check box and use the slider to set the heuristic analysis level: Light scan, Medium scan, or Deep scan.
If you want Web Anti-Virus to use heuristic analysis to scan web pages for phishing links, in the Anti-Phishing Settings section, select the Heuristic analysis for detecting phishing links check box.