NW_20041213_VASCO to Provide Guidance for Full Year 2005

OAKBROOK TERRACE, Illinois and BRUSSELS, Belgium – December 13, 2004 – VASCO Data Security International, Inc. (Nasdaq: VDSI: www.vasco.com), a global provider of enterprise-wide security products that support e-business and e-commerce, today announced that it will provide guidance for the full year 2005 on Thursday, December 16. In addition, VASCO will communicate final estimates and guidance for the year 2004.

On December 16, at 10:00 am EST/16.00 CET VASCO will hold a conference call, which will be streamed on the VASCO website (www.vasco.com).

Dial-in telephone numbers for the conference call:
Dial-in US: 888-424-5801
Dial-in International: +1 973-409-9258

Mr. T. Kendall Hunt, Chairman and CEO, Mr. Jan Valcke, President and COO and Mr. Cliff Bown, Executive Vice President and CFO of VASCO, will be available on December 16 to answer analyst, investor and media questions.



About VASCO: VASCO designs, develops, markets and supports patented “Identity Authentication” products for e-business and e-commerce. VASCO’s Identity Authentication software is delivered via its Digipass hardware and software security products. For user access control, VASCO’s VACMAN products guarantee that only designated Digipass users get access to the application. With over 12,5 million Digipass products sold and ordered, VASCO has established itself as a world-leader for strong Identity Authentication with over 300 international financial institutions and approximately 1,400 blue-chip corporations and governments located in more than 80 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 2 456 9810, [email protected]