June 9, 2010

OAKBROOK TERRACE, Illinois and ZURICH, Switzerland – 9 June, 2010 – VASCO Data Security International, Inc. (Nasdaq: VDSI; www.vasco.com), a leading software security company specializing in strong authentication products, announces today its distribution agreement with Westcon Group Australia and New Zealand, a leading distributor of networking and communications technologies operating in the IT channel. VASCO will rely on Westcon’s well established and loyal channel to increase their presence in Australia and New Zealand. VASCO’s solutions offer user authentication and e-signature capability which enhance secure access to corporate networks, online accounts and applications.

Westcon and Datastor (Westcon’s New Zealand Business), will offer VASCO’s enterprise DIGIPASS range, DIGIPASS for Mobile, SMS Software, Plug-in Server Software, IDENTIKEY and the aXsGUARD appliances to its reseller customers. VASCO’s strong authentication solutions replace static passwords with dynamic one-time passwords (OTP), eliminating unauthorized access to networks, applications and business-critical data. Furthermore, online transactions can also be secured with DIGIPASS e-signature, preventing important transactions from being altered in transit. VASCO’s two-factor authentication solutions are user-friendly, cost-effective, and easy to implement.

Westcon Group is the world’s leading specialty distributor of advanced network technology solutions. For VASCO, Westcon Group & Datastor will be focusing on their reseller channel in Australia and New Zealand. Westcon has a large dedicated Security business and a targeted reseller channel that includes value-added resellers, systems integrators and service providers that resell products and solutions to small and medium sized businesses, enterprise organizations and governments around the world. This gives Vasco great exposure to these markets and will increase the solution sell for Westcon & Datastor.

“Westcon has a profound knowledge of the Australian and the New Zealand market. We address the growing amount of threats to networks with products from leading security manufacturers,” says Leigh Howard from Westcon Group.”

"VASCO is complementary to the existing vendors within our Security practice and allows us to design and offer complete end to end security solutions to our extensive reseller base across the ANZ market".

“Since Westcon Australia is a leading distributor of security solutions, we couldn’t choose a better partner for the Australian and New Zealand market. VASCO addresses the growing security needs of the local companies by providing strong authentication solutions that are highly scalable and easy to implement,” declares Jan Valcke, President and COO of VASCO Data Security. “We are confident that our collaboration with Westcon Australia and New Zealand will help our company to expand its reach.”

Westcon Group is the world’s leading specialty distributor of advanced network technology solutions. Through its Westcon and Comstor brands, Westcon Group is a significant sales channel for Avaya, Cisco, Check Point, EMC, Polycom and close to 100 other industry-leading vendors. Founded in 1985, Westcon Group has particular expertise in Converged Networking, Security and Storage. They specialise in the convergence of voice, data and video applications and technologies, including VoIP, network security and wireless and mobility-based connectivity as well as storage, virtualization and datacenter requirements. Westcon Group’s Westcon and Comstor business practices offer significant benefits to its networking and communications equipment vendor partners as well as its reseller, systems integrator and service provider customers. For vendors, Westcon Group acts as an indirect sales channel, allowing use of its sales force, technical capabilities, logistics services and breadth of customer relationships to cost-effectively distribute vendors’ networking and communications products across six continents including the Americas, Europe, Emerging Markets and Asia Pacific regions.

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 over 9,500 companies in more than 100 countries, including approximately 1,450 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 VASCO's public filings with the U.S. Securities and Exchange Commission for further information regarding VASCO and its operations. This document may contain trademarks of VASCO Data Security International, Inc. and its subsidiaries, including VASCO, the VASCO “V” design, DIGIPASS, VACMAN, aXsGUARD and IDENTIKEY. For more information contact: Jochem Binst, +32 2 609 97 00, [email protected]