Blue Security maintained an encrypted list of 450,000 emails that spammers shouldn't harass. If an email spammer violated that, Blue Security could send thousands of requests from users' machines to the email spammer.
That led to a flood of Internet traffic so heavy that it disrupted the spammers' ability to send e-mails to other victims -- a crippling effect that caused a handful of known spammers to comply with the requests.
But hackers raged a similar war against Blue Security forcing them to close their shutters.
If you are still looking to safeguard your email against spam, here are tips to hide your email address.
Sources: Washington Post | Matt Cutts | TW