Exhibit 31.02

      CERTIFICATIONS

      I, Melissa H. Cruz, certify that:

1.    I  have   reviewed  this   quarterly   report  on  Form  10-Q  of  Concord
Communications, Inc.;

2.    Based on my knowledge,  this report does not contain any untrue  statement
of a  material  fact or omit to  state a  material  fact  necessary  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 report;

3.    Based on my  knowledge,  the  financial  statements,  and other  financial
information included in this 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 report;

4.    The  registrant's  other  certifying  officer(s) and I are responsible for
establishing and maintaining  disclosure  controls and procedures (as defined in
Exchange Act Rules 13(a) 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 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 on such evaluation; and

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

5.    The registrant's other certifying  officer(s) 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 the registrant's  board of
directors (or persons performing the equivalent functions):

      a)    All significant  deficiencies and material  weaknesses in the design
or operation of internal  control over financial  reporting which are reasonably
likely  to  adversely  affect  the  registrant's  ability  to  record,  process,
summarize and report financial information; 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 over financial reporting.

Date: November 5, 2004

                                           /s/ Melissa H. Cruz
                                           -------------------------------------
                                           Melissa H. Cruz
                                           Executive Vice President,
                                           Business Services,
                                           Chief Financial Officer and Treasurer

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