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Thursday, April 14, 2011

Botnet Statistics [2011-04-13]

The greylisting detection system is still very slow today. Data collected with greylisting are not included below.

detection period: 2011-04-13 00:00-23:59 UTC
total number of suspected botnet IPs: 1339
number of botnet IPs notified to network operators: 1066
number of blocked spams: 138147
recipient count of blocked spams: 4238510

The top 10 networks (as found in WHOIS), ordered by number of suspected botnet IPs are:

RankNetwork# of suspected botnet IPs
1HINET-NET365
2UNICOM-GD239
3CHINANET-ZJ-WZ28
4CHINANET-GD19
5CHINANET-JS14
6000.065.376/0002-6514
7UNICOM-SD12
8033.530.486/0001-2911
9003.420.926/0002-0511
10KORNET-KR10

The top 10 countries (as defined by the 2-character country code), ordered by number of suspected botnet IPs are:

RankCountry# of suspected botnet IPs
1China433
2Taiwan370
3Brazil77
4Russian Federation60
5United States41
6South Korea25
7India25
8Kazakhstan22
9Ukraine21
10Colombia20

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