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Zix Corporation Selected by Sierra Health Services for Enterprise-wide Secure e-Messaging


Nevada Healthcare Company's Subsidiaries Include State's Largest HMO and Multi-Specialty Medical Group

DALLAS, Mar 1, 2005 (BUSINESS WIRE) -- Zix Corporation (ZixCorp(R)), (Nasdaq:ZIXI), a global provider of secure e-messaging, e-prescribing, and e-transaction applications and services, today announced that Sierra Health Services, Inc. (NYSE:SIE), a diversified healthcare company based in Las Vegas, has selected ZixCorp's ZixVPM(R) (Virtual Private Messenger) and ZixPort(R) solutions for system-wide email protection.

The company signed a three-year contract for ZixCorp's services to comply with the secure email mandates of the Health Insurance Portability and Accountability Act of 1996 (HIPAA). ZixVPM will enforce email security policies for Sierra's 3,000 employees to ensure secure handling of confidential data, including a pre-configured HIPAA lexicon that automatically detects Protected Health Information (PHI). ZixPort will provide custom branding and encrypted messaging functionality to Sierra's Web site.

"ZixCorp services make ongoing management and administration easier," said Sean Gallagher, director of information systems security for Sierra. "We're comfortable knowing that human error is out of the equation and that our PHI is being scanned and identified correctly. After reviewing our options, we realized that ZixCorp had the best technology and the best handle on HIPAA security requirements."

Sierra's subsidiaries currently offer a health maintenance organization, preferred provider organization, health and life indemnity insurance, behavioral healthcare services, and third-party administration for self-insured companies. Sierra's subsidiaries also include Southwest Medical Associates, Nevada's largest multi-specialty group and Health Plan of Nevada, Inc., the state's largest HMO.

"Sierra serves more than half a million customers. With ZixCorp's send-to-anyone capability, we protect PHI in a way that's easy to use and practical for everyday, broad-based use," said Rick Spurr, acting chief executive officer, president and chief operating officer for ZixCorp. "Our relationship with Sierra supports them in putting patient privacy first and gives them an additional competitive edge in the market."

About Sierra Health Services

Sierra Health Services Inc., based in Las Vegas, is a diversified healthcare services company that operates health maintenance organizations, indemnity insurers, preferred provider organizations and a multi-specialty medical group. Sierra's subsidiaries serve more than 560,000 people through health benefit plans for employers, government programs, and individuals. For more information, visit the company's Web site at www.sierrahealth.com.

About Zix Corporation

Zix Corporation (ZixCorp(R)) 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 services improve patient care, reduce costs, and improve efficiency through e-prescribing and e-lab solutions. For more information, visit www.zixcorp.com.

SOURCE: Zix Corporation

ZixCorp
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Christa Osswald, 214-370-2175
publicrelations@zixcorp.com
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Peter Wilensky, 214-515-7357
invest@zixcorp.com