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Kaspersky Anti-Virus 7.0
Web Anti-Virus guards HTTP traffic as follows:
1. Each web page or file that can be accessed by the user or by a certain
application via HTTP is intercepted and analyzed by Web Anti-Virus for
malicious code. Malicious objects are detected using both the databas-
es included in Kaspersky Anti-Virus, and the heuristic algorithm. The
databases contain descriptions of all malicious programs known to date,
and methods for neutralizing them. The heuristic algorithm can detect
new viruses that have not yet been entered in the databases.
2. After the analysis, you have the following available courses of action:
If a web page or an object accessed by a user contains malicious
code, access to such an object is blocked. A notification is dis-
played that the object or page being requested is infected.
If a file or a web page contains no malicious code, it becomes im-
mediately available to the user.
Scripts are scanned according to the following algorithm:
1. Web Anti-Virus intercepts each script run on a web page and scans
them for malicious code.
2. If a script contains malicious code, Web Anti-Virus blocks it and informs
the user with a special popup notice.
3. If no malicious code is discovered in the script, it is run.
Caution!
To intercept and scan http traffic and scripts for viruses, Web Anti-Virus has to
be running before a connection is established with a web resource. Otherwise,
traffic will not be scanned.
9.1.
Selecting Web Security Level
Kaspersky Anti-Virus protects you while you use the Internet at one of the follow-
ing levels (see Figure 31):
Maximum Protection
–
the level with the most comprehensive monitoring
of scripts and objects incoming via HTTP.
The program performs a tho-
rough scan of all objects using the full set of application databases.
This
security level is recommended for aggressive environments, when no
other HTTP protection tools are being used.
Recommended
–
settings of this level are recommended by Kaspersky Lab
experts. This level scans the same objects as at
Maximum Protection
,
