Garanti Bank (Turkey) Secures its Retail Customers with VASCO's Digipass for Java Phone

September 19, 2006

OAKBROOK TERRACE, Ill., and BRUSSELS, Belgium, - September 19, 2006 - VASCO Data Security International, Inc. ( (Nasdaq: VDSI), the global number one vendor of strong user authentication and e-signature products, today announced that leading Turkish bank Garanti Bank will protect its retail customers' assets with Digipass for Java Phone strong authentication.

Garanti Bank already uses the hardware Digipass 260 for corporate banking. Retail customers will have the choice between the software Digipass for Java Phone and Digipass 260. The underlying technology, VACMAN Controller, supports the entire range of VASCO's client authentication products. By offering different types of end-user authentication tools to different types of account holders, Garanti Bank supports VASCO's full option, all-terrain business model.

Digipass for Java Phone is a software Digipass that can be downloaded to any Java supporting mobile phone. The customized version of Digipass for Java Phone used by Garanti Bank, is able to compute digital signatures, in addition to one-time passwords. To learn more about Digipass for Java Phone, please visit .

"We opted for VASCO's Digipass for Java Phone because we wanted to give our retail customers the choice whether to work with a hardware Digipass 260 or to download a software on their mobile phone," said Mr. Rasim Mahmutogullari, Manager of Strategic Support Unit at Garanti Bank. "Security, customer service and accessibility are very important for Garanti Bank. With VASCO's Digipass and VACMAN Controller strong authentication solutions, we have great tools to fulfil our goals."

"We salute Garanti Bank's visionary approach of strong authentication," said Jan
Valcke, VASCO's President and COO. "Garanti is one of the first banks to use Digipass for Java Phone for retail banking. In addition, the Turkish bank gives their retail customers the choice between hardware and software versions of Digipass. The combination of Garanti Bank's market vision and customer awareness will make its online banking applications even more successful."

About VASCO: VASCO designs, develops, markets and supports patented user authentication products for the financial world, remote access, e-business and e-commerce. VASCO's user authentication software is delivered via its Digipass hardware and software security products. With over 25 million Digipass products sold and delivered, VASCO has established itself as a world-leader for strong User Authentication with over 500 international financial institutions and approximately 3,000 blue-chip corporations and governments located in more than 100 countries.

Forward Looking Statements
Statements made in this news release that relate to future plans, events or performances are forward-looking statements. Any statement containing words such as "believes," "anticipates," "plans," "expects," and similar words, is forward-looking, and these statements involve risks and uncertainties and are based on current expectations. Consequently, actual results could differ materially from the expectations expressed in these forward-looking statements.

Reference is made to the Company's public filings with the US Securities and Exchange Commission for further information regarding the Company and its operations.

For more information contact:
Jochem Binst, +32 2 609 9700, [email protected]