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Computer Virus Incident Report for the the 3rd Quarter of 2005

(July - September)

 


October 21, 2005
IT Security Center
Information-technology Promotion Agency, Japan (IPA)



 

This is a summary of Computer Virus Incident Report for the 3rd Quarter (July - September) 2005.

1. Reported Numbers

 

The reported number for the Third Quarter of 2005 (July to September) was totaled 13,729. Following graph shows the shift in the reported number aggregated by the IPA Security Center for each quarter (for 3 months). After the Second Quarter of 2004, the reported number has been moving at certain high level of approx. 14,000. However, the ratio for the damage by infection has been showing less than 1% from the Forth Quarter of 2004.

Since virus spreading status still remains, it is important to conduct continuous preventive measures.

Shift in Reported Number in Quarterly

* 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

As for the detection number for virus which has been started its aggregation from April, 2004, its reported number again exceeded more than 10,000,000 in the Second Quarter of 2005. As for the cause of the increase, a number of the variants of the W32/Mytob which exploit functionality of mails emerged which likely to enlarge infection. Since the timing of a newer virus or a certain virus’s variant’s emergence are not foreseeable, it is necessary to be cautious when you handle attachment files to e-mails daily.

Shift in the Detection Number

 

3. The Reported Number Classified by Virus

Although W32/Netsky for which reported number continually be many tending to decrease while seeing the shift in the reported number aggregated by quarterly. However, the reported number remains higher level comparing with the other viruses’.

In addition, W32/Mytob which possessing bots functionality had also spreading and the reported number is rightly after following the W32/Netsky’s.

Reported Number by Virus

 

4. Shift in the Reported Number Classified by Reporter

The breakdown for the reported number classified by reporter is as follows: the reports from general corporate users constitute more than 90% against the whole.

Reported Number by Reporter

 



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