528, M.P.K.D.T.S. 2020. IMPLEMENTATION OF IOT SYSTEM USING BLOCKCHAIN SECURITY ANALYSIS FOR MALICIOUS ATTACK AND INTRUSION PREVENTION. Turkish Journal of Computer and Mathematics Education (TURCOMAT). 11, 3 (Jul. 2020), 2227–2236. DOI:https://doi.org/10.17762/turcomat.v11i3.12354.