VASCO to Announce First Quarter 2018 Financial Results May 8, 2018

CHICAGO and ZURICH – April 5, 2018 -- VASCO Data Security International, Inc. (NASDAQ: VDSI), a global leader in digital solutions including identity, security and business productivity, announced today that it will release its first quarter 2018 financial results after market close Tuesday, May 8, 2018.

On May 8, 2018 at 4:30 p.m. ET/22:30 CEST, VASCO will host a conference call to discuss its first quarter 2018 financial results. A live webcast of the conference call will be available via the VASCO Investor Relations website at: ir.vasco.com. Shortly after the conclusion of the call, a replay of the webcast will be available at the same website.

Dial-in telephone numbers for the conference call are:

• Dial-in U.S.: 800-659-3371
• Dial-in international: +1-312-281-1206