The Conficker data would be one empirical source you can look at. You have a break down by ASN and Country:
http://www.shadowserver.org/wiki/pmwiki.php/Stats/Conficker > -----Original Message----- > From: Steven Bellovin [mailto:[email protected]] > Sent: Wednesday, January 27, 2010 3:08 PM > To: [email protected] list > Subject: Countries with the most botnets > > A colleague needs to know, along with citable sources if possible. > > Ideally - number of zombified PCs, percentage of zombified PCs, name of > nation, source. > > Threat reports from symantec and macafee suggest the US leads, with > China a very close second. > > Yes, we realize that answers will be imperfect. > > --Steve Bellovin, http://www.cs.columbia.edu/~smb > > > >
