Roberts, Paul. E-mail provider tries message fingerprinting. InfoWorld. April 12, 2004.

E-mail provider Everyone.net Inc. says it has a new program to protect e-mail users from one by-product of the plague of unsolicited commercial ("spam") e-mail: bounced e-mail messages. The San Jose, California, company plans to announce an enhanced e-mail protection service called Total Protection 2.0 Tuesday at the ISPCon conference in Washington, D.C. The new service includes a technology called Email Fingerprint, that can stop "bounce storms," in which e-mail users who have had their e-mail address stolen by spammers or e-mail worms receive a flood of returned e-mail messages.