Botnet Statistics [2009-12-01]

HiNet in Taiwan got a surprising surge in botnet computers. My detection system logged more than 2000 botnet IPs from HiNet. Is this an outbreak of a new attack vector?

detection period: 2009-12-01 00:00-23:59 UTC
total number of suspected botnet IPs: 3723
number of botnet IPs notified to network operators: 3499

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

Rank	Network	# of suspected botnet IPs
1	HINET-NET	2112
2	CHINANET-GD	252
3	BSNLNET	101
4	002.558.157/0001-62	94
5	AR-TEAR7-LACNIC	78
6	002.558.134/0001-58	39
7	UNICOM-SD	31
8	002.449.992/0001-64	31
9	AR-CASA10-LACNIC	27
10	AR-PRSA-LACNIC	25

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	Taiwan	2127
2	China	558
3	Brazil	295
4	India	182
5	Argentina	143
6	Russian Federation	77
7	United States	44
8	Colombia	26
9	Ukraine	25
10	Thailand	21