KBC Securities Secures Bolero Customers with VASCO's DIGIPASS 270

OAKBROOK TERRACE, Ill. and ZURICH, May 27 /PRNewswire-FirstCall/ -- VASCO Data
Security International, Inc. (Nasdaq: VDSI) (www.vasco.com), a leading
software security company specializing in authentication, and KBC Securities,
the largest brokerage company in Belgium, announce that KBC Securities is
using DIGIPASS(R) 270 to secure its Bolero customers. The introduction of
DIGIPASS for Bolero customers coincides with the launch of the new Bolero
website.

Bolero is KBC Securities online platform where individual investors can
self-manage their investment portfolio. Bolero provides access to more than 20
markets including most European markets (including CEE), the US and Canadian
markets. With Bolero the individual investor disposes of the same tools as
professional and institutional investors. The new website includes access to
online information, such as analyst reports and advanced search capabilities
to assist the investor in taking the right decision.

DIGIPASS 270 is lightweight ultra-portable authentication device which fits
into the customer's wallet. The device is activated through a PIN-code. Once
the PIN-code is entered onto the DIGIPASS 270, a dynamic password will be
generated. This One-Time Password (OTP) will allow to user to access the
Bolero website. DIGIPASS 270 is used in conjunction with VASCO's VACMAN(R)
authentication technology on the server side.

New Bolero customers will immediately receive their DIGIPASS and access-ID
when they open their account. The new website can only be accessed using
DIGIPASS protection as a result existing customers will gradually migrate to
the new website. Existing customers in Belgium will migrate first, Eastern
European countries, including Poland, Hungary, Romania and the Czech Republic
will be rolled out in a next phase.

"We chose to work with VASCO to enhance the security of our brokerage service
because of the personalization options they offered. We want to promote the
Bolero brand name more actively. The DIGIPASS 270 is a good fit for our brand
strategy: we are able to differentiate ourselves and personalize the
authenticator. Furthermore the DIGIPASS offers high security with a gadget
like appearance. It can be stored in the wallet. As a result users can easily
carry it anywhere, which responds to their need to be able to quickly respond
to the market and buy stock whenever and wherever at the best time," says Luc
Aspeslagh, Managing Director at KBC Securities.

"KBC is a longstanding customer of VASCO. We closely work together to offer
user-friendly and accessible solutions for online banking. We are happy to see
that our collaboration extends beyond retail banking with the launch of the
new secure Bolero website," says Jan Valcke, President and COO at VASCO Data
Security.

For more information, visit: www.vasco.com and www.bolero.be

About KBC Securities
KBC Securities (www.kbcsecurities.com) is one of Belgium's leading equity
specialists. Over 20 years KBC Securities has developed longstanding
relationships with an extensive client base, providing stock broking, equity
research, securities services, corporate finance, retail, sales, market making
services.

KBC Securities has a large international institutional sales team and an
extensive research team covering a broad range of sectors. KBC Securities also
has strong trading capabilities, with a leading trading position and market
share on Euronext.

The corporate finance team offers strategic and financial advice to both
listed companies and privately held corporations.

For self-directed retail investors KBC Securities combines the expertise of a
professional stockbroker and excellent service in very efficient transactional
websites in six different countries: Bolero in Belgium, Patriadirect in the
Czech Republic and in the Slovak Republic, KBC Makler in Poland, KBC Equitas
in Hungary and U-Trade in Rumania.

About VASCO
VASCO is a leading supplier of strong authentication and e-signature solutions
and services specializing in Internet Security applications and transactions.
VASCO has positioned itself as global software company for Internet Security
serving a customer base of approximately 8,500 companies in more than 100
countries, including more than 1,250 international financial institutions.
VASCO's prime markets are the financial sector, enterprise security,
e-commerce and e-government.

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," "intend," "mean," 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.

This document may contain trademarks of VASCO Data Security International,
Inc. and its subsidiaries, which include VASCO, the VASCO "V" design,
DIGIPASS, VACMAN, aXs GUARD and IDENTIKEY.

For more information contact:
Jochem Binst, +32 2 609 97 00, jbinst@vasco.com
Patrick Vande Kerckhove, +32 496 57 90 60, patrick@bolero.be

SOURCE VASCO Data Security International, Inc.

Jochem Binst, +32 2 609 97 00, jbinst@vasco.com; or Patrick Vande Kerckhove,
+32 496 57 90 60, patrick@bolero.be, both for VASCO Data Security
International, Inc.