By William Jackson
The United States was the top source of distributed attack traffic,
originating nearly three times as many attacks as second-place China,
according to a recent study by security service provider SecureWorks
The figures are based on identified attacks attempted against the
company's 2,000 customers so far in 2008. The bad guys launching the
attacks were not always based in this country, but they used compromised
computers in the United States to form botnets as platforms for the
According to SecureWorks, 20.6 million attacks originated from U.S.
computers and 7.7 million from Chinese computers.
"It clearly shows that the United States and China have a lot of
vulnerable computers that have been compromised and are being used as
bots to launch cyberattacks," said Hunter King, a security researcher at
SecureWorks. "This should be a warning to organizations and personal
computer users that not only are they putting their own computers and
networks at risk by not securing them, they are providing these
cybercriminals with a platform from which to compromise other
The rest of the top 10 sources of attack traffic were:
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