CipherTrust Introduces Industry's First Multi-Identity Reputation System; TrustedSource Message Reputation Provides Unprecedented Accuracy and Protection to Combat Image Spam and Other Zombie-based Threats.

ATLANTA -- CipherTrust, Inc., the leader in messaging security, today announced TrustedSource(TM) Message Reputation, the latest enhancement to the Company's global reputation engine. The addition makes CipherTrust(R) the first company to offer reputation tracking across multiple identities, including IP-, URL- and message-based reputation. Approximately one-third of CipherTrust's customers have been running TrustedSource Message Reputation since April, achieving significant effectiveness in blocking image spam and other zombie-based threats, and safeguarding legitimate mail.

Malicious E-mail Threats Continue

Over the past three months, message threats have continued to steadily morph and increase in volume, making multi-identity reputation tracking necessary for automated tuning and intelligent datamining in real time, critical as threats dynamically evolve. Specifically, CipherTrust Research has found:

--Zombies--compromised PCs used for spewing spam, viruses and phishing--have continued to steadily increase, with the last major spike showing a 20 percent increase in newly created zombies in May.

--Image-based spam--unwanted messages that use embedded images in order to evade spam filters--has increased 200 percent over the past three months and at peak times now accounts for more than 30 percent of all spam messages.

--Malicious message volumes have been rising sharply, with a 20 percent spike in global mail volumes during the month of July.

Additionally, since early this year, CipherTrust has identified new developments in spam operations including the release of new tools able to generate completely randomized images and deploy them in spam at rates of up to 1 million messages per hour. This plays a significant role in determining the increased use of image-based spam which continues to rise sharply each month.

TrustedSource Message Reputation -- Proactive Protection

CipherTrust's TrustedSource reputation engine helps to characterize the Internet's messaging traffic and make it understandable and actionable. TrustedSource Message Reputation is particularly effective in identifying spammers who are using image proliferation and manipulation to evade detection. Leveraging the Company's network of 7,000 IronMail(R) e-mail security appliances deployed in 48 countries, CipherTrust:

--Analyzes thousands of fingerprints per message including embedded images and attachments.

--Exchanges more than 20 fingerprints for each message with the TrustedSource network.

--Correlates reputations assigned to each identity by intelligently aggregating the global behavioral and sending pattern knowledge available for each.

--Provides real-time data exchange to allow for instantaneous detection of new zombies and new spam outbreaks such image-based spam.

"Over the last four years, the people responsible for spam have continued to use aggressive, and frankly ingenious, techniques to make their messages blend with legitimate e-mail. It is a high-stakes, high-profit business, and they continue to invest heavily in attempts to get messages delivered to users in the face of increasingly effective anti-spam systems. The growing use of zombies and image-based spammers are examples of these initiatives," said Dr. Paul Judge, chief technology officer of CipherTrust. "Since 2002, CipherTrust has focused on innovative approaches such as TrustedSource to protect our customers from the ever-changing methods of the attackers. The invention of TrustedSource Message Reputation provides a powerful architecture that tracks the source of the attack and blocks them."

CipherTrust has integrated IP reputation identities into its IronMail e-mail security appliances since early 2002 and provides real-time behavior analysis on more than one-third of the world's enterprise messaging traffic. In many environments, CipherTrust has been able to block 80 percent of connections based purely on reputation data, increasing security levels while maintaining a false positive rate of less than one in one million.

Availability and Pricing

CipherTrust's TrustedSource multi-identity reputation engine is available immediately as part of the current version of IronMail, and customers can request a free upgrade to the version.

About CipherTrust, Inc.

CipherTrust, Inc., the global market leader in messaging security, provides innovative layered security solutions to stop inbound messaging threats such as spam, viruses, intrusions and phishing, and protect against outbound policy and compliance violations related to sensitive data leakage. CipherTrust's integrated best-of-breed capabilities deliver maximum availability and unmatched security, effectiveness and enterprise manageability across multiple communication channels including e-mail, instant messaging and Web-based mail. Recognized by IDC as the market leader for secure content management appliances, CipherTrust protects the messaging infrastructure of more global enterprises than any other vendor, including more than 40 percent of the Fortune 500. CipherTrust is backed by top-tier investors including Battery Ventures and Greylock Partners. For more information about CipherTrust, please visit www.ciphertrust.com or call 877-448-8625.

The following are either trademarks or registered trademarks of CipherTrust, Inc. in the United States or other countries or both: CipherTrust, IronMail and TrustedSource. Other company, product or service names may be trademarks or service marks of others.