Messaging security company CipherTrust has launched TrustedSource 3.0 to stem the flow of spam from "zombie" spam servers.
Zombies are PCs that have been taken over by remote hackers to spread spam and/or malware without their owners knowing.
TrustedSource 3.0 uses real-time data on enterprise e-mail traffic around the world to "score" the IP addresses sending e-mails and to judge which ones are safe to receive e-mail from.
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Those with the lowest score are prevented from sending messages to the enterprise, as they are judged to be spam or malware distribution threats.
IDC analyst Brian Burke said, "Precisely assessing sender reputation is an important component of the next generation of messaging security solutions."
TrustedSource 3.0 can be run on CipherTrust’s IronMail security appliances. It is available as a free update for CipherTrust customers who have purchased maintenance and support.