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Tumbleweed Extends MailGate With Recurrent Pattern Detection
SecurityProNews
Staff Writer
2005-05-23
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Tumbleweed Communications has extended its MailGate email security suite with Recurrent Pattern Detection technology to enable Outbreak Detection as a new layer of defense against breaking spam, phishing, spyware, virus and worm attacks sent out in email blasts.
As reported in the most recent Dark Traffic Report issued by Tumbleweed Communications' Message Protection Lab, valid email now comprises less than 5-10% of all inbound enterprise message traffic. With the volume and complexity of malicious traffic growing all the time, multi-layer multi-technology approaches have proven to be the most successful at stopping the widest range of known and unknown email threats. The addition of Outbreak Detection to the Tumbleweed MailGate products provides customers with the most effective, complete approach to inbound email security.
Tumbleweed's MailGate suite provides the comprehensive, multi-tiered security framework required to deliver comprehensive protection from inbound email threats:
1. Preventive Defense -- These technologies block invalid email traffic in real time using network-level SMTP analysis and traffic shaping, before a message is accepted into the enterprise network. Threats stopped include Dark Traffic, spoofed messages, and invalid recipients. This kind of analysis is generally deployed at the network edge, and can drop anywhere from 50% to 95% of incoming email traffic as junk.
2. Reactive Defense -- Once a message is determined to be valid, and is accepted into the enterprise network, Tumbleweed email security applies a number of reactive technologies to block previously identified threats. These include heuristic rules, content signatures, lexical analysis, DNS block lists, and sender reputation service approaches. This layer of defense is used to block traditional spam, phishing, spyware, virus, and worm attacks, with extremely high capture rates and very low false positives. The challenge with this approach is that new, innovative threats that have not yet been analyzed can slip past this layer of defense, which is why a Proactive Defense layer is crucial.
3. Proactive Defense -- Proactive technologies complement Reactive approaches by identifying new, emergent email threats in real time, providing true Zero Hour defense. This type of analysis provides near real-time protection against spam, phishing, and virus outbreaks. This approach is particularly strong at defending against zombie attacks sent from hijacked personal computers, which are virtually impossible for traditional sender reputation services to identify. Technologies providing proactive defense include Intent-Based Filtering (IBF), which performs intelligent natural language processing, and Recurrent Pattern Detection (RPD) which checks each message against Internet traffic to identify outbreaks.
"In order to combat increasingly sophisticated malicious email attacks, we're committed to providing our customers with an expanding arsenal of security features," said John Thielens, CTO of Tumbleweed Communications. "Outbreak Detection, combined with Tumbleweed's other threat protection technology, ensures that our customers are comprehensively protected from the first minute onward."
The new Outbreak Detection functionality will roll out to existing MailGate Email Firewall customers immediately with the 6.1.1 update, and to existing MailGate AntiSpam Appliance customers in early June with the 2.5 update, free of charge.
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SecurityProNews is a daily online and email publication focusing on internet security issues.
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