Offers of drugs, particularly Viagra, accounted for about one-third of global spam messages sent in the first half of 2004, according to a study by Commtouch, a company that sells antispam products.
Commtouch, which says it analyzed hundreds of millions of unsolicited e-mails, said about 55 percent of spam messages originated in the United States, while slightly more than 73 percent of them referred recipients to Web sites hosted in China. China, South Korea, the United States, Russia and Brazil host more than 99 percent of all Web sites mentioned in spam, according to Commtouch.
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