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Zix Corporation Selected by PortAuthority Technologies for DataSec Alliance™

Program provides complementary data security solutions for customer convenience

DALLAS — Nov. 16, 2005 — Zix Corporation (ZixCorp®), (Nasdaq: ZIXI), a global provider of secure e-messaging and e-prescribing solutions and services, today announced that it has been selected to join the DataSec Alliance, a program from PortAuthority Technologies that brings together premier data security products that monitor and prevent information leaks for enterprise customers.

“We are excited to have ZixCorp join our alliance,” said Pete Foley, chief executive officer for PortAuthority Technologies. “The need to secure customer data, protect confidential information, and achieve regulatory and corporate compliance cuts across multiple industries. ZixCorp meets this demand by enabling customers to have confidence when sending secure email to anyone without touching existing messaging infrastructure.”

The DataSec Alliance fosters interoperability with complementary technology vendors to enable IT managers to go to one place to select comprehensive data protection and compliance solutions. Vendors included in the program provide a variety of security functions including firewalls, messaging and encryption gateways, and data management solutions.

“Customers seek the easiest-to-use quality e-messaging solutions that offer the lowest implementation costs, and this program supplies that powerful combination,” said Nigel Johnson, ZixCorp vice president of product management and business development. “Through seamless integration with current infrastructure, ZixCorp services maximize end-user transparency by offering sophisticated, send-to-anyone secure email encryption without touching the desktop. We're excited to be involved in this program that puts integration and convenience at the forefront.”

About PortAuthority Technologies
PortAuthority Technologies is the leading provider of information leak prevention security solutions that reliably and accurately control the unauthorized distribution of sensitive information for data privacy, confidential information protection and true compliance. PortAuthority stops information leaks of customer data and confidential information by monitoring internal and outbound enterprise communications and delivering policy enforcement in real time.

PortAuthority Technologies ensures compliance with regulations such as Gramm-Leach-Bliley, HIPAA, CA CC1798, PIPEDA and Sarbanes-Oxley by closing the gap between employee behavior and corporate and legal policies. PortAuthority Technologies is headquartered in Palo Alto, California. For more information on PortAuthority Technologies, visit

About Zix Corporation
Zix Corporation (ZixCorp®) provides easy-to-use-and-deploy e-communication services that protect, manage, and deliver sensitive information to enterprises and consumers in healthcare, finance, insurance, and government. ZixCorp's eSecure services enable policy-driven email encryption, content filtering, and send-to-anyone capability while its eHealth service improves patient care, reduces costs, and improves efficiency through an e-prescribing solution. For more information, visit


ZixCorp Contacts:
Public Relations: Christa Osswald (214) 370-2175,
Investor Relations: Peter Wilensky (214) 515-7357,