Anti-spam firm Blue Security is to scrap its spam-fighting effort after deciding its escalating conflict with a renegade spammer was placing the internet as a whole in jeopardy. Blue Security established a ‘Do Not Intrude Registry’ (akin to the Do Not Call Registry for telemarketing) with around 450,000 members. Participants downloaded a small tool, called Blue Frog, which systematically floods the websites of spammers with opt-out messages. Depending on your point of view, this initiative can either be viewed as community action or vigilantism.

Last month, members of the Blue community received aggressive spam messages in an attempt to intimidate users into dropping out of Blue Security's network. Ordinary punters who had nothing to do with Blue Security also received the same messages proving, if proof were needed, that the belligerent junk mail campaign was a scatter-shot affair. This campaign of intimidation was followed by a sophisticated denial of service attack against Blue Security's website. According to Blue Security, a renegade Russian language speaking spammer known as PharmaMaster succeeded in bribing a top-tier ISP's staff member into black holing Blue Security's former IP address (194.90.8.20) at internet backbone routers. This rendered Blue's main website inaccessible outside Israel.

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