Collaborative Spam Filtering Using Email Networks

"The technique exploits the structure of social networks to determine whether a message is from a friend or a spammer."

"More than two-thirds of all email traffic is spam. But the problem could be reduced if our computers work together to control it."

"Combatting spam needs to be a joint effort, a pooling of anti-spam programme information the way police join forces to catch criminals"

Read the original paper