Sistema 4B Chooses NestorCommerce/ACI Worldwide Solution

NestorCommerce, the financial services and e-commerce division of Nestor Inc, in conjunction with its alliance partner ACI Worldwide, announces the licensing of its PRISM risk management solution to Sistema 4B, S.A. 4B, the largest e-payment processor in Spain, will use PRISM to proactively monitor ATM and POS transactions for debit card fraud.

"Sistema 4B drives the ATM and POS networks for more than 30 commercial banks in Spain and is playing a major role in the development of new e-payment technology," said Mr. Jose Sanjuan, deputy general manager of 4B. "Our members depend on us for reliable, innovative processing services. With PRISM, we can provide cutting-edge fraud detection services that will protect our members from losses associated with debit card fraud."

PRISM employs Nestor's patented neural network technology in a robust solution that integrates with 4B's existing processing operation. PRISM identifies subtle patterns of fraudulent behavior by comparing individual card usage with known patterns of fraud and monitors transactions in a near real-time environment. When a suspicious transaction is detected, the PRISM flags it for prompt and appropriate action.

"PRISM offers 4B a technologically advanced and cost effective way to perform rapid scoring and review of its members' debit card transactions," said Dena Hamilton, senior manager of ACI's Neural Network Technologies group. "PRISM provides a major improvement over rules-based systems and statistical score cards while giving 4B early, accurate and adaptive fraud detection that can identify new criminal patterns before losses multiply."

About ACI Worldwide

ACI Worldwide is helping customers change the way the world works with solutions designed to improve the way we live, work and shop. Every minute of every day, financial institutions, retailers and networking industries rely on ACI solutions and services to smoothly move money and information. As a leading international provider of solutions for e-payments, ACI maintains operations in the Americas, Europe/Middle East/Africa and Asia/Pacific. More than 2,300 customers in 79 countries use ACI distributed solutions. Visit ACI Worldwide on the Internet at www.aciworldwide.com.

About Sistema 4B

Sistema 4B was incorporated in 1974 by four major Spanish commercial banks. It is the largest banking services company in Spain, delivering services to 30 commercial banks (that represents 50% of the banking domestic market share). The leading banks of the country--such as Banco Santander Central Hispano, Banesto, Banco Popular, Banco Sabadell, etc. -- are Sistema 4B members. Sistema 4B is the card processor for these banks, and is responsible for the ATM and POS network management. During fiscal year 1999, Sistema 4B processed EUR 30 billion with 10 million cards issued, 10,500 ATMs installed and 222,000 POS devices deployed. Sistema 4B is a Visa International group members, and holds a seat on the European Board of Europay International. Sistema 4B also delivers corporate cash management services, as well as credit bureau information.

About NestorCommerce

NestorCommerce is a division of Nestor Inc, a leading provider of intelligent decision-support solutions for the financial services and ecommerce industries. Nestor's client/server products incorporate innovative pattern- recognition technologies ideally suited for data-intensive, real-time decision applications. The company's products provide predictive fraud detection and case management for e-commerce fraud, credit, debit, retail and commercial card fraud, as well as merchant fraud, money laundering and customer relationship management. Nestor products are sold direct and by selected partners worldwide. Through its affiliate, Nestor Traffic Systems Inc, the company also applies its technologies to a suite of video-based intelligent transportation systems that promote enhanced traffic management and improved safety. For more information, call 401-331-9640 or visit www.nestor.com.

Contact Nestor Inc, Tom Spillane, 401-331-9640, tspillane@nestor.com or PAN Communications Inc, Christina Goodwin, 978-474-1900, cgoodwin@pancomm.com.