Fair Isaac Blaze Advisor 6.1 Integrates Rete III Technology

Minneapolis, MN. -- January 23, 2006 -- Fair Isaac Corporation today released Blaze Advisor 6.1, an enhanced version of the company’s industry-leading rules management system. Blaze Advisor 6.1 demonstrates Fair Isaac’s continued investment in delivering the most comprehensive platform for business rules application development and Enterprise Decision Management (EDM).

Available immediately, Blaze Advisor 6.1 integrates Rete III rules execution technology gained when Fair Isaac acquired assets of RulesPower, Inc. in 2005. Rete III is designed for data- and rules-intensive organizations where optimal performance is critical. Combined with Blaze Advisor’s existing performance optimization capabilities, powerful rules repository, developer tools, and templates for business-user rules management, the integrated system helps organizations process and execute complex, high-volume business rules faster and more efficiently than other rules management systems.

With a centralized enterprise repository for business rules, powerful query and update tools, multi-platform and multi-lingual support, and documented best practices, Blaze Advisor 6.1 gives organizations a clear process for quickly replicating their decision strategies across business systems to improve business operations. The new features also will enhance the performance of other Fair Isaac solutions in which Blaze Advisor is embedded, including Falcon™ Fraud Manager, Falcon™ ID solution, and Capstone® Decision Accelerator.

Blaze Advisor 6.1 is part of Fair Isaac’s software and solutions for enterprise decision management, which combines data analytics, modeling and policy-level control to let companies define and manage their automated business systems for improved efficiency and greater profitability.

About Fair Isaac

Fair Isaac 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. Visit Fair Isaac online at http://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 version 6.1 and the benefits to be derived from this product 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, 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, Falcon and Capstone 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.