Authorize.Net Corp., a service of Lightbridge Inc. (Nasdaq:LTBG), today announced that it recently completed a successful Multi-Card Compliance Program (MCCP) certification audit conducted by Ambiron LLC, a leading provider of data security and compliance services.

To complete the MCCP audit successfully, Authorize.Net was subjected to internal and external vulnerability scans designed to verify card association compliance programs sponsored by Visa, MasterCard and Discover Card. As a result of its certification, Authorize.Net has re-validated its compliance with the Visa USA Cardholder Information Security Program (CISP) and validated its compliance with the following programs:

-- MasterCard Site Data Protection (SDP)

-- Discover Information Security and Compliance (DISC)

-- Visa Canada Account Information Security (AIS)

Although these programs are unique, each was established to create rigorous technology and data maintenance standards designed to protect sensitive cardholder information from being compromised. These standards are directed at all businesses that store, process, or transmit cardholder information.

"Data security is something we take extremely seriously," stated Corey Mandell, Authorize.Net vice president of product development. "Receiving this certification demonstrates Authorize.Net's continued commitment to protect the confidentiality and integrity of personal data submitted via the Authorize.Net Payment Gateway."

About Authorize.Net(R) (www.authorize.net)

Authorize.Net provides secure, reliable, Internet Protocol (IP)-based payment gateway solutions that enable merchants to authorize, settle and manage electronic transactions anytime, anywhere, via Web sites, retail, mail order/telephone order (MOTO) call centers and on wireless devices. Authorize.Net is sold through an extensive network of reseller partners and leading financial institutions that offer its industry-leading payment services to their merchant customers. Authorize.Net is a service of Lightbridge Inc.

About Lightbridge(R) (www.lightbridge.com)

Lightbridge Inc. (NASDAQ:LTBG) is a leading analytics, decisioning and e-commerce company that businesses trust to manage customer transactions. Lightbridge adds value to fraud screening, credit qualification, payment authorization, billing, and enhanced voice services. Lightbridge solutions leverage intelligent automated systems and human expertise, delivered primarily through the efficiencies and cost savings of an outsourced business model. Businesses around the world use Lightbridge to make smarter decisions, deliver better services, provide secure payments, reduce costs and enhance the lifetime value of their customers. For more information, visit www.lightbridge.com or call 800-LIGHTBR.

AUTHORIZE.NET, LIGHTBRIDGE, and the Lightbridge logo are registered trademarks of Lightbridge Inc. All other marks are the property of their respective owners.

Forward-looking Statements

Certain statements in this news release that are not historical facts, including, without limitation, those relating to the Company's partnerships, products, commitments, compliance certifications, services markets and growth prospects and successes are forward-looking statements that involve risks and uncertainties. Such statements are based upon the current Authorize.Net's beliefs and expectations of the management of the company. Actual results may vary materially from those contained in forward-looking statements based on a number of factors including, without limitation, (i) dependence on a limited number of clients, (ii) the company's revenue concentration in the wireless telecommunications business and the declining subscriber growth rate in that business, (iii) continuing rapid change in the telecommunications industry and payment processing industries, and other markets in which the company does business that may affect both the company and its clients, (iv) the impact of competitive products, services and pricing on both the company and its products and services, (v) market acceptance of the company's new or enhanced products, services and technologies, (vi) the industry risks associated with Authorize.Net's business and operations including, without limitation, illegal or improper uses of Authorize.Net's payment system, unauthorized intrusions or attacks on Authorize.Net's payment system that may impair the operations of its payment system, changes or failures to comply with credit card association rules, security compliance programs, governmental regulation and the application of existing laws to Authorize.Net's business and dependence on relationships with a third party payment processors, and (vii) factors disclosed in the company's filings with the U.S. Securities and Exchange Commission including, without limitation, its 2004 Annual Report on Form 10-K and its most recent Quarterly Report on Form 10-Q. The company undertakes no obligation to update any forward-looking statements.

Contacts
Authorize.Net
David Schwartz, 425-586-6039
or
Lightbridge Inc.
Lynn Ricci, 781-359-4854
lricci@lightbridge.com