Botnet Statistics [2012-05-20]

detection period: 2012-05-20 00:00-23:59 UTC
total number of suspected botnet IPs: 3746
number of botnet IPs notified to network operators: 3193
number of spam blocked: 152272
recipient count of spam blocked: 5175276

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

Rank	Network	# of suspected botnet IPs
1	CHINANET-GD	644
2	UNICOM-GD	625
3	HINET-NET	403
4	MAINT-CHINANET-HA	344
5	CHINANET-HA	169
6	CHINANET-FJ	49
7	CRTC	38
8	VNPT-VNNIC-VN	33
9	CHINACOMM	28
10	CHINANET-JS	24

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

Rank	Country	# of suspected botnet IPs
1	China	2212
2	Taiwan	426
3	Brazil	104
4	United States	103
5	India	92
6	Russian Federation	65
7	South Korea	59
8	Viet Nam	58
9	Iran	33
10	Argentina	29