NW_20050415_VASCO TO RELEASE Q1 2005 RESULTS ON THURSDAY, APRIL 21_ DIAL-IN INFORMATION CONFERENCE CALL

OAKBROOK TERRACE, Illinois and BRUSSELS, Belgium – April 14, 2005 – 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, announced today that it will release its Q1 2005 results on Thursday, April 21.

On April 21, 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).
The dial-in telephone numbers for the conference call are:
Dial-in US: 800-938-0653
Dial-in International: +1 973-935-2408

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 April 21 to answer analyst, investor and media questions.



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 13,5 million Digipass products sold and delivered, VASCO has established itself as a world-leader for strong User Authentication with over 350 international financial institutions and approximately 1,500 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]