EXHIBIT 23.1 CS&L Chatham, Seland & Lashley, P.A. Certified Public Accountants June 18, 2004 Advanced Communications Technologies, Inc. (the "Company") 420 Lexington Avenue, Suite 2739 New York, New York 10170 Attention: Wayne I. Danson, Chief Executive Officer Dear Wayne: The undersigned hereby consents to the inclusion of the calendar years 2002 and 2003 audited financial statements of Cyber-Test, Inc., a Florida corporation ("Cyber-Test"), in the Current Report on Form 8-K to be filed by the Company in connection with the acquisition of the assets of Cyber-Test by a wholly-owned subsidiary of the Company. Very Truly Yours, /s/Chatham, Seland & Lashley, P.A. Chatham, Seland & Lashley, P.A.