Fair Isaac Partners with Leading Wireless Data Clearing Provider to Fight Fraud

MACH, which provides data clearing for wireless carriers worldwide using the global system for mobile communications (GSM) standard, will install and operate a Fair Isaac RoamEx^® roamer data exchanger network hub at its European data center to enhance its roaming fraud protection services and raise the standard for roaming procedures that can reduce the losses for GSM mobile operators.

Fair Isaac's RoamEx solution, which currently processes 95 percent of all roaming call records for the North American wireless industry, offers operators near real-time exchange and visibility of roaming information of all types, regardless of provider network technology, service event or region. Better roaming call visibility enables quicker and more effective fraud detection, improved revenue assurance, reduced losses and increased roaming revenues.

"We are happy to be teaming up with Fair Isaac. Our partnership underlines MACH's commitment to provide innovative services that secure the revenue streams of our clients within the GSM mobile community," said Lars Torpe Christoffersen, Chief Executive Officer of MACH. "The coverage of the RoamEx solution in the Americas in particular gives our fraud protection service global reach - a key requirement for efficient and reliable fraud protection."

"The partnership delivers clear benefits and opportunities for Fair Isaac, MACH and their respective customers," said Mike Gandolfo, vice president of Fair Isaac's Global Telecom solutions. "The agreement with MACH, the leading GSM data clearing provider with a strong presence in Europe and Asia, complements and extends RoamEx's coverage of near real-time record exchange internationally, and helps to ensure consistently high levels of customer service."

Mobile roaming fraud occurs when a subscriber who does not intend to pay moves from the home operator network to another operator network and takes advantage of the home operator's lack of visibility of subscriber activity in the visited network. An individual roaming fraud incident can result in a loss of more than US$ 1 million within a matter of a few days if not detected early enough.

RoamEx Roamer Data Exchanger is part of Fair Isaac's Enterprise Decision Management (EDM) solutions that help telecommunications service providers guard against fraud and payment risk. The solution currently processes over two billion call detail records every month around the globe for more than 75 wireless networks.

About MACH
MACH provides advanced inter-operator solutions to the telecommunications and data industry worldwide assisting clients to develop and secure existing and new revenue streams. The company focuses on clearing and billing services within roaming, Interconnect, EDI and WLAN as well as value-added services, including business intelligence, revenue assurance, fraud detection, re-pricing and MMS Interworking. MACH has an established global client base, including some of the leading international groups. With 400 employees concentrated in client support, quality management and development, MACH combines global expertise and local knowledge into innovative and value creating services to support and optimise clients' business. Headquartered in Luxembourg, MACH has regional offices in Denmark, UK, Germany, Singapore, UAE, India, USA, Russia and Brazil. For further information please visit www.mach.com

About Fair Isaac
Fair Isaac Corporation (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 a year in financial services, telecommunications, insurance, 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.

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 RoamEx roamer data exchanger offering and the relationship described herein, and the benefits to be derived from the RoamEx 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, the failure to maintain and develop relationships with key alliance partners, 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.