The Register: Blue Security calls it quits after attack by renegade spammer

“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…”

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