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IT Security

IPA:IPA/ISEC Reports for Computer Virus for the 3rd-Quarter (July September2010)

October 15, 2010

IT Security Center
Information-technology Promotion Agency, Japan (IPA)

This is the report on computer virus for the third quarter of 2010 (from July to September), compiled by Information-technology Promotion Agency, Japan (IPA).

1. Number of Cases Reported

The number of cases reported in the third quarter of 2010 (from July to September) was 3,468. The graph below (Figure 1) shows the trend in the quarterly (i.e., three months') figures for the cases reported to IPA.

As shown in Figure 1, the number of cases was at the same level as that of the April-June quarter of 2008 (with 3,406 cases).

Chart 1: Trend in the Number of Cases Reported to IPA

2.Number of Viruses Detected

Virus detection count for the July-September quarter of 2010 was about 130,000, which is equivalent to the level of the April-June quarter of 2010 (with about 130,000) and about one-third of the April-June quarter of 2009 (with about 360,000). So it is on the decrease.

W32/Netsky occupies a large portion but it is also on the decrease. As in the case of W32/Mydoom and W32/Mytob, which showed one-time increase in detection count in the April-June quarter of 2009 and the January-March quarter of 2010, respectively, there were some viruses whose detection count increased suddenly for a while, but those viruses are also on the decrease.

According to the reports filed to IPA, most of the viruses detected were contained in e-mail attachments. So we consider the decreasing trend in e-mail based viruses is attributable to dissemination of security countermeasures against such viruses.

Chart 2: Trend in the Virus Detection Count

3.Number of Cases Reported, Classified by Computer Viruses

As in the past, W32/Netsky marked the highest repot count. In the January-March quarter of 2010, W32/Mydoom outpaced W32/Netsky and marked the highest repot count, but it has been decreasing since then.

To prevent damages caused by this virus, be sure to implement appropriate security measures on a daily basis, including applying security patches, using antivirus software, and handling e-mail attachments with care.

Chart 3: Trend in the Number of Cases Reported, Classified by Computer Virus

Inquiries to:

IT Security Center, Information-technology Promotion Agency, Japan (IPA/ISEC)
Hanamura/Kagaya
Tel:+81-3-5978-7527
Fax:+81-3-5978-7518
E-mail: