Kaspersky Lab Anti-Virus 2010, 3u, 3Y User's Guide Page 42

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K A S P E R S K Y A N T I - V I R U S 2 0 1 0
42
IN THIS SECTION:
Component operation algorithm ...................................................................................................................................... 42
Changing security level of files and memory ................................................................................................................... 43
Changing actions to be performed on detected objects................................................................................................... 43
Creating a protection scope ............................................................................................................................................. 44
Using heuristic analysis ................................................................................................................................................... 45
Scan optimization ............................................................................................................................................................ 45
Scan of compound files ................................................................................................................................................... 45
Scanning large compound files ....................................................................................................................................... 46
Changing the scan mode ................................................................................................................................................. 46
Scan technology .............................................................................................................................................................. 47
Pausing the component: creating a schedule .................................................................................................................. 48
Pausing the component: creating an applications list ...................................................................................................... 49
Restoring default protection settings ............................................................................................................................... 49
COMPONENT OPERATION ALGORITHM
The File Anti-Virus component loads when you start your operating system and runs in your computer's memory,
scanning all files that are opened, saved, or executed.
By default, File Anti-Virus only scans new or modified files; in other words, files that have been added or modified since
the previous scan. Files are scanned according to the following algorithm:
1. The component intercepts every attempt by the user or by any program to access any file.
2. File Anti-Virus scans iChecker and iSwift databases for information about the intercepted file, and determines if
it should scan the file, based on the information retrieved.
The following operations are performed when scanning:
1. The file is scanned for viruses. Malicious objects are recognized based on Kaspersky Anti-Virus databases. The
database contains descriptions of all malicious programs and threats currently known, and methods for
processing them.
2. After the analysis you have the following available courses of action for Kaspersky Anti-Virus:
a. If malicious code is detected in the file, File Anti-Virus blocks the file, creates a backup copy and attempts to
perform disinfection. If the file is successfully disinfected, it becomes available again. If disinfection fails, the
file is deleted.
b. If potentially malicious code is detected in the file (but the maliciousness is not absolutely guaranteed), the
file proceeds to disinfection and then is sent to the special storage area called Quarantine.
c. If no malicious code is discovered in the file, it is immediately restored.
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