The information contained in this Form 8-K shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

On January 6, 2009, VASCO Data Security International, Inc. (VASCO) issued a press release providing new revenue guidance for the full year ended December 31, 2008. The full text of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

On January 6, 2009, VASCO held a conference call with investors to discuss VASCO's new revenue guidance for the full year ended December 31, 2008. A transcript of the conference call is furnished as Exhibit 99.3 to this Current Report on Form 8-K.

(d) Exhibits. The following Exhibits are furnished herewith:

          Exhibit
          Number    Description
          99.1      Press release, dated January 6, 2009.

          99.2      Prepared script for January 6, 2009 Conference Call.

          99.3      Transcript of January 6, 2009 Conference Call.