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IT Security

IPA:IPA/ISEC Reports for Computer Virus for the First-half (January June2010)

April 20, 2010

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

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

1. Number of Cases Reported

The number of cases reported in the first quarter of 2010 (from January to March) was 4,074. 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 on the decrease since the October-December quarter of 2008 (with 5,464 cases) but increased to 4,074 in the January-March quarter of 2010.

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

2.Number of Viruses Detected

The virus detection count was on the decrease since the October-December quarter of 2008 (with about 700,000) and the count decreased further to about 190,000 in the January-March quarter of 2010. W32/Autorun whose detection count was high in the October-December quarter of 2008 has decreased significantly while W32/Netsky which once has marked the highest detection count is 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

In the January-March quarter of 2010, W32/Mydoom marked the highest detection count, outpacing W32/Netsky which had been the top until then. W32/Mydoom is a virus infected via e-mail attachments and due to the emergence of its subspecies, the number of cases is on the increase.

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/Ooura
Tel:+81-3-5978-7527
Fax:+81-3-5978-7518
E-mail: