Fair Isaac Recognized as Business Rules Management Systems Market Leader.

Industry Analyst Report Credits Fair Isaac's Leadership to the Continued Success of its Award-Winning Blaze Advisor Business Rules Management System in the North American Market

MINNEAPOLIS -- Fair Isaac Corporation (NYSE:FIC), the leading provider of analytics and decision management technology, announced today that leading analyst firm IDC has recognized Fair Isaac as the worldwide revenue leader in the Business Rules Management Systems (BRMS) software market.

In the new IDC report titled "Worldwide Business Rules Management Systems Software 2006-2010 Forecast and 2005 Vendor Shares" (IDC #203627, September 2006), Fair Isaac leads the worldwide BRMS revenue category in 2005 with revenues of $45.1 million, growing a strong 28.6 percent compared to revenues of $35.1 million in 2004. Fair Isaac is ranked as the leader in BRMS market share with 23.9 percent worldwide and 33.4 percent in the key America market.

According to IDC, business rules management tools centralize the definition, discovery, storage, and submission of the vast quantity of rules used in business operations to provide organizations with greater automation, more responsiveness to change, and less expensive distribution and maintenance of their business activities. IDC anticipates that revenue for the worldwide BRMS market will continue to grow from its 2005 level of $188.5 million to $455.1 million in 2010, based on "the strong role that business rules management systems will have in building out the application infrastructure platforms."

"Business rules management systems are poised to become a common facet of application development," said Stephen D. Hendrick, group vice president for IDC's Application Development and Deployment research group. "Business rules management systems also play a key role in Enterprise Decision Management (EDM), which combines data analytics, predictive modeling, decision model optimization and policy-level control to help organizations define and manage their automated business systems for improved efficiency and greater profitability."

"The IDC ranking reflects the market's continued trust in Fair Isaac's decision management technologies at a time when more businesses are realizing the value of taking a more sophisticated, enterprise-level approach toward their critical decision processes," said William Waid, vice president, EDM Technology and Custom Solutions, Fair Isaac. "Our rules management technology continues to provide a foundation for EDM that is focused on helping businesses reach new levels of agility, consistency and precision in an increasingly complex, competitive and regulated global economy."

"Users who choose Blaze Advisor as part of the Enterprise Decision Management suite of products get far greater decision-making capabilities with their rules management," added William Waid. "Predictive modeling and rules management are combined in EDM to give organizations strong analysis and decision-making capabilities to aid in their planning and portfolio management."

The latest release of Fair Isaac's Blaze Advisor[TM] business rules management system includes the advanced Rete III inference engine for best-in-class performance within complex, enterprise-class deployments and powerful rules management capabilities. Blaze Advisor BRMS is used by many of the world's leading companies. It is the first rules engine to support Java, .NET and COBOL deployment of the same rules. The multi-platform solution supports Web Services and SOA, Java 2 Enterprise Edition (J2EE) platforms, Microsoft .NET and COBOL for z/OS mainframes.

About Fair Isaac

Fair Isaac (NYSE:FIC) makes decisions smarter. The company's solutions and technologies for Enterprise Decision Management give businesses the power to automate more processes, and apply more intelligence to every customer interaction. Through increasing the precision, consistency and agility of their decisions, Fair Isaac clients worldwide increase sales, build customer value, cut fraud losses, manage credit risk, reduce operational costs, meet changing compliance demands and enter new markets more profitably. Founded in 1956, Fair Isaac powers hundreds of billions of decisions per year in financial services, insurance, telecommunications, retail, consumer branded goods, healthcare and the public sector. Fair Isaac also helps millions of individuals manage their credit health through the www.myfico.com website. Visit Fair Isaac online at 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 Blaze Advisor product 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 product 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, 2005, and its quarterly report on Form 10-Q for the period ended June 30, 2006. 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 Blaze Advisor 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.