This is a summary
of Computer Virus Incident Report for the 3rd Quarter (July - September)
2006.
The gross reported number
for computer virus for the 3 rd Quarter (July to September 2006)
was totaled 10,440. Following graph shows the
shift in quarterly reported number filed by
IPA. The quarterly reported number is tending to decrease, but
is maintaining high level of transition in the reported number.

* The %s shown in the
graph are the ratio for actual damage from infection against entire
reported numbers in each quarter.
2. Detection Number
for Virus
Since W32/Sober variants
had sent quantity of mails in the 4 th Quarter of 2005, virus
detection number was getting almost doubled in that quarter (the
variants had stopped its activities on January 2006).
Detection number is tending
to decrease in 2006: the 3 rd Quarter of 2006 is about 3.7M (July
to September) and is less than half compared with the one for
the 1 st Quarter of 2006.

3. The Reported
Number by Virus
W32/Netsky virus for
which number of reports filed by IPA since 2004 is also tending
to decrease compared with the previous quarterly reported number;
however, it is still maintaining high level of transition in the
reported number.
In addition, spread of
virus is being maintained. It is important to conduct fundamental
anti-virus measures daily such as application of modification
program , use of anti-virus software ,
be cautious when handling attachment file to e-mail ,
etc. to prevent from any of damages in case newer viruses or their
variants emerge.
4. Type of Reporters
Breakdown of reporters had been moved as follows: ratio for the
reports from general users takes over more than 90% against entire
reporters.