Title	A Comprehensive Survey of Distributed Defense Techniques against DDoS Attacks
Author	Monika Sachdeva, Gurvinder Singh, Krishan Kumar, Kuldip Singh
Citation	Vol. 9  No. 12  pp. 7-15
Keywords	DDoS, Centralized defense, Distributed defense, deployment , detection, response

Title	A Secured and Decentralized Medical document management methodology using a private Block Chain
Author	Shanmugaraja P, Soniya Priyatharsini G , Chokkanathan K, Senthil Mahesh P.C, Vanitha K
Citation	Vol. 22  No. 6  pp. 670-674
Keywords	Blockchain, Centralized database, Secure storage.

Title	Use of Blockchain to Support the Security of Internet of Things-A Review
Author	Saher Un Nisa, Maryam Khalid
Citation	Vol. 23  No. 7  pp. 149-154
Keywords	IoT (Internet of things), security, Privacy, Blockchain , Centralized , Decentralized.