MINNEAPOLIS, MN, June 27, 2005 -- Fair Isaac Corporation (NYSE:FIC), the leading provider of analytics and decision technology, today announced that Sun Microsystems plans to power the upcoming enhancements to Sun Preventive Services with Fair Isaac's rules management technology.

Sun Preventive Services enables Sun customers to significantly improve system uptime and availability, and reduce incident volume and cost. As a capability within Sun Preventive Services, Fair Isaac Blaze Advisor, a Java technology-based solution, will enable Sun to deliver enhanced risk analysis services to its customers. These services include hardware, software and patch-level assessment as well as the examination of a variety of other critical systems data in order to identify and remediate potential IT issues before they can affect downtime.

"Committed to the success of our customers worldwide, Sun selected Fair Isaac's 100 percent Java technology-based rules management system as a key component in our state-of-the-art risk management services for our customers," said Mark Schietinger, director, Availability Services, at Sun Microsystems. "Sun Preventive Services provides our customers with risk analysis and mitigation solutions that can help them cut costs and improve availability of key IT systems. Fair Isaac's technology significantly enhances our ability to effectively diagnose problems, and identify and recommend resolutions in a timely and effective manner. We plan to continue leveraging Fair Isaac technology to power an expanding range of cutting-edge risk analysis service innovations in the future."

Certified to work with the Sun environment, Fair Isaac Blaze Advisor proved a robust solution for Sun's risk analysis needs. After a comprehensive review of the leading business rules technology vendors, Sun selected Fair Isaac's enterprise approach to rules management, which includes scalability, consistency, reuse and overall vision of how rules work within large mission-critical enterprise applications. Specific features that influenced Sun's decision to select Blaze Advisor include its enterprise rules repository, enhanced rules metadata properties and its powerful querying capability.

"Sun's use of Blaze Advisor within its diagnostic system illustrates the power of rules in a complex customer-facing application," said Mark Layden, vice president and general manager of Enterprise Decision Management Software at Fair Isaac. "Sun is the pioneer of Java technology, and its selection and deployment of Blaze Advisor provides the company with an enterprise-class Java-based solution designed to improve its interaction with its customers on a daily basis."

Fair Isaac Blaze Advisor gives business users and analysts a powerful tool to update business strategies and ensure governance across critical enterprise information systems, using straightforward business terms. Business users are able to control business logic for their information systems and maintain application decision behavior without IT assistance, using intuitive Blaze Advisor rules maintenance applications. This increases business agility, allowing rules to be modified quickly and easily, and requiring IT to simply link and test the final applications.

Blaze Advisor is the first rules engine to support Java, .NET and COBOL deployment of the same rules. The multi-platform solution supports Web Services, Java 2 Enterprise Edition (J2EE) platforms, Microsoft .NET and Component Object Model (COM), and COBOL for IBM mainframes.

About Sun Microsystems, Inc.

Since its inception in 1982, a singular vision -- "The Network Is The Computer" -- has propelled Sun Microsystems, Inc. (Nasdaq:SUNW) to its position as a leading provider of industrial-strength hardware, software and services that make the Net work. Sun can be found in more than 100 countries and on the World Wide Web at http://sun.com.

About Fair Isaac

Fair Isaac Corporation (NYSE:FIC) is the preeminent provider of creative analytics that unlock value for people, businesses and industries. The company's predictive modeling, decision analysis, intelligence management, decision management systems and consulting services power billions of mission-critical customer decisions a year. Founded in 1956, Fair Isaac helps thousands of companies in over 60 countries acquire customers more efficiently, increase customer value, reduce fraud and credit losses, lower operating expenses and enter new markets more profitably. Most leading banks and credit card issuers rely on Fair Isaac solutions, as do insurers, retailers, telecommunications providers, healthcare organizations, and government agencies. Through the www.myfico.com Web site, consumers use the company's FICO(R) scores, the standard measure of credit risk, to manage their financial health. For more information, visit www.fairisaac.com.

Statement Concerning Forward-Looking Information

Except for historical information contained herein, the statements contained in this press release that relate to Fair Isaac, including statements regarding its Fair Isaac Blaze Advisor offering, and the benefits to be derived from this offering, are forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially, including any unforeseen technical difficulties related to the implementation, use and functionality of the offering, the risks that customers will not perceive material benefits from the offering, failure of the products to deliver the expected results, the possibility of errors or defects in the offering, regulatory changes applicable to the use of consumer credit and other data, and other risks described from time to time in Fair Isaac's SEC reports, including its Annual Report on Form 10-K for the year ended September 30, 2004, and quarterly report on Form 10-Q for the period ended March 31, 2005. Forward-looking statements should be considered with caution. If any of these risks or uncertainties materializes or any of these assumptions proves incorrect, Fair Isaac's results could differ materially from Fair Isaac's expectations in these statements. Fair Isaac disclaims any intent or obligation to update these forward-looking statements.

Fair Isaac and FICO are trademarks or registered trademarks of Fair Isaac Corporation, in the United States and/or in other countries. Other product and company names herein may be the trademarks of their respective owners.

Fair Isaac Corporation
John D. Emerick, Jr., 800-213-5542 (Investors/Analysts)
investor@fairisaac.com
Angela Carlson, 415-492-5373 (Media)
acarlson@fairisaac.com