Exhibit 16 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Ladies and Gentlemen: We have read and agree with the comments in Item 4 of Form 8-K/A1 of Data Systems Network Corporation, dated November 3, 1998. /s/ Plante & Moran, LLP - ------------------------------- Plante & Moran, LLP Southfield, Michigan November 3, 1998