Harvey S. Koch, Ph.D. April 28, 2021 of Cynwyd, PA.  Born August 17, 1943 to Phillip M. and Ethel (nee Saltzburg) Koch in Philadelphia, PA.  Harvey was raised in West Oak Lane and was a graduate of Germantown High School (1961).  He then earned his B.S. in Mathematics (1965), and his M.S. (1967) and Ph.D. (1973) in Computer Science from Pennsylvania State University.  He had a prestigious career in the computer sciences and was an expert in the security field working at Univac, General Electric, Martin Marietta, Lockheed Martin, and the SI Organization.  He was a faculty member at Penn State, Ohio State and the University of Rochester.  He was a member of Sigma Alpha Rho, Xi Chapter.  Harvey is survived by his beloved wife June (nee Tucker), cherished daughter Miriam, and treasured brother Allan (Norma) Koch. Due to COVID, graveside services were held privately. Contributions in his memory may be made to Pennsylvania State University (psu.edu).