Section 1350 Certification of Principal Financial Officer pursuant Section 906

EX-32.2 5 dex322.htm SECTION 1350 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT SECTION 906 Section 1350 Certification of Principal Financial Officer pursuant Section 906

EXHIBIT 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

I, Clifford K. Bown, certify, based upon a review of the Quarterly Report on Form 10-Q for VASCO Data Security International, Inc. for the quarter ended on March 31, 2008, that to the best of my knowledge:

(1)

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ Clifford K. Bown

Clifford K. Bown

Executive Vice President and

Chief Financial Officer

May 9, 2008