<PAGE>


                                                                    EXHIBIT 31.2

      CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302
                       OF THE SARBANES-OXLEY ACT OF 2002

     I, Anita M. Primo, the principal financial officer of SEDONA Corporation,
certify that:

     1. I have reviewed this quarterly report on Form 10-QSB of SEDONA
Corporation;

     2. Based on my knowledge, this quarterly report does not contain any untrue
statement of a material fact or omit to state a material fact necessary in order
to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this
quarterly report;

     3. Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this quarterly report;

     4. The registrant's other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and we have:

          (a) Designed such disclosure controls and procedures, or caused such
     disclosure controls and procedures to be designed under our supervision, to
     ensure that material information relating to the registrant, including its
     consolidated subsidiaries, is made known to us by others within those
     entities, particularly during the period in which this quarterly report is
     being prepared;

          (b) Evaluated the effectiveness of the registrant's disclosure
     controls and procedures and presented in this report our conclusions about
     the effectiveness of the disclosure controls and procedures, as of the end
     of the period covered by this report based upon such evaluation; and

          (c) Disclosed in this report any change in the registrant's internal
     control over financial reporting that occurred during the registrants' most
     recent fiscal quarter that has materially affected, or is reasonably likely
     to materially affect, the registrant's internal control over financial
     reporting;

         5. The registrant's other certifying officers and I have disclosed,
based on our most recent evaluation of internal control over financial
reporting, to the registrant's auditors and the audit committee of registrant's
board of directors:

          (a) All significant deficiencies and material weaknesses in the design
     or operation of internal controls over financial reporting which are
     reasonably likely to adversely affect the registrant's ability to record,
     process, summarize and report financial data and have identified for the
     registrant's auditors any material weaknesses in internal controls; and

          (b) Any fraud, whether or not material, that involves management or
     other employees who have a significant role in the registrant's internal
     controls; and

     6. The registrant's other certifying officers and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal controls
subsequent to the date of our most recent evaluation, including any corrective
actions with regard to significant deficiencies and material weaknesses.

Dated:  November 15, 2006           /s/ ANITA M. PRIMO
                                    --------------------------------------------
                                    Anita M. Primo
                                    Vice President and Chief Financial Officer
                                    (Principal Financial Officer)