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Exhibit 23.3
Consent of Independent Accountants
We hereby consent to the inclusion of our Independent Auditors' Report dated March 6, 2003 regarding the balance sheets of Taft National Bank as of December 31, 2002 and 2001, and the related statements of operations, changes in stockholders' equity, and cash flows for the years then ended, included in the Registration Statement on Form S-4 of United Security Bancshares, filed with the Securities and Exchange Commission, and the reference to our firm as experts.
/s/ Vavrinek, Trine, Day & Co., LLP
Laguna Hills, California
January 30, 2004
Consent of Independent Accountants