A prominent crusader against unsolicited e-mail ads withdrew from an escalating cyberwar with spammers on Wednesday after his Web site and numerous others came under a massive retaliatory attack.

Blue Security, a company that provided antispam software and was widely praised for orchestrating a kind of do-it-yourself campaign to spam spammers, has "ceased all antispam operations," said Sandra Fathi, a spokeswoman for the company.

The surrender comes after the company's Web site, along with those of many of its partners, were hobbled by a denial-of-service attack earlier this month. The DoS attack, which used thousands of commandeered computers to overload the sites' servers with traffic, is believed to have originated with one Russia-based spammer, Fathi said.

Read the full story (Cnet News)