Israel and 
Spain were the only two countries to drop out of the world top 20 spammers from CBL data in April 2012. Congratulations!
Not so lucky were the 
U.K. and 
Turkey, which joined the top 20.
Also, 
Korea got to #2 in the second and third week of the month. and placed third overall, up from fifth in March.
Countries ∀ All 
from CBL Volume
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-jsq
Continuing the question of Ogee snowshoe: black swan or new strategy? let’s look at Ogee snowshoe spam in the first week of May 2012.
The two dotted lines trending down together in the middle are AS 29131 and AS 28178, and they both fit the traditional profile for snowshoe spam hosting sites, because they advertise hosting or colocation as their main services. AS 29131 is registered to RapidSwitch, which advertises dedicated servers, cloud solutions, and colocation. AS 28178, registered as Network Operations Center (NOC), which keeps on rolling waves of snowshoe spam, appears to be operating under the name BurstNet, which offers managed servers and co-location as its first two services.
However, the dotted line rising to the top right that pulled the solid overall snowshoe volume line back up is not a hosting center: it’s an ISP. CDM’s AS 6428 appears to be operating as Primary Network, whose first services are T-1 Internet access and metro Internet. And Primary Network is not alone. We’ve pulled out a list of all the ASNs affected by Ogee snowshoe so far, and quite a few of them are ISPs, some of them very well known ISPs.
Snowshoe: it’s not just for hosting centers anymore.
-jsq
Microsoft, world leader in Internet security, will doubtless clean up its spamming act when it sees its AS 8075 is #1 for outbound spam in the U.S. for April 2012 in rankings from PSBL data, pushing the U.S. to #1 worldwide.
Other rankings don’t show Microsoft high, but does MSFT really want to show up in any of these rankings?
| Rank | (Previous) | Country | Population | Spam Volume | Percent of top 10 |
|---|---|---|---|---|---|
| 1 | (3) |  US |
310,232,863 | 673,306 | 18.2% |
| 2 | (2) |  IN |
1,173,108,018 | 506,397 | 13.7% |
| 3 | (1) |  CN |
1,330,044,000 | 413,089 | 11.2% |
| Total | 3,689,376 | 100% |
These rankings that show Microsoft high are derived by SpamRankings.net from PSBL blocklist data. The April 2012 SpamRankings.net from CBL blocklist data do not show Microsoft in the top 10. Apparently PSBL’s spam traps happened to be in the line of spam from Microsoft, while CBL’s were not.
And of course Microsoft probably doesn’t mean to be sending any of that spam. More likely botnets exploited a MSFT security vulnerability. Here’s hoping they clean it up soon!
-jsq
VN
BR
RU
TW
PL
RO
BY
PE
UA
KZ
AR
PK
ID
TR
CO