APPENDIX A. FREQUENTLY
ASKED QUESTIONS
This chapter is devoted to the most frequently asked questions from users
pertaining to installation, setup, and operation of Kaspersky Anti-Virus. We shall
try to answer them here in detail.
Question: Is this possible to use Kaspersky Anti-Virus with anti-virus
software supplied by other manufacturers?
In order to avoid conflicts we recommend that you uninstall ant-virus
software of other manufacturers prior to installation of Kaspersky Anti-
Virus.
Question: Kaspersky Anti-Virus does not rescan files that have been
scanned earlier. Why?
This is true. Kaspersky Anti-Virus does not rescan files that have not
changed since the last scan.
This is possible due to the use of new technologies: iChecker and
iStreams. These technologies involve verification of the checksums of
the files in the additional NTFS streams.
Why does Kaspersky Anti-Virus cause a certain decrease in server per-
formance, noticeably loading the CPU?
Virus detection is a computationally intensive mathematical problem,
requiring structural analysis, checksum calculation and mathematical
data conversions. Processor time is therefore the main resource
consumed by the anti-virus software, and each new virus added to the
anti-virus database increases the overall scanning time. This is a
necessary sacrifice for the security and safety of your data.
Other anti-virus products speed up scanning by excluding both viruses
which are less easily detectable or less frequent in the geographic loca-
tion of the anti-virus vendor and file formats that require complicated
analysis (e.g. PDF) from their database.
In contrast, Kaspersky Lab believes that the purpose of its anti-virus ap-
plications is to establish real and complete anti-virus security for its us-
ers. We believe that "partial protection" is even worse than no protection
at all, because it forces users to take personal precautions.
Kaspersky Anti-Virus gives its users maximum protection. Experienced
users can, of course, accelerate anti-virus scanning to the detriment of