Digital storage Internet of things 6 Network security 5 Cloud computing 4 Block-chain 3 Blockchain 3 Cryptography 3 Data storage 3 Economic and social effects 3 Information management 3 Internet protocols 3 Authentication 2 Big data 2 Classification (of information) 2 Cloud-computing 2 Data aggregation 2 Data aggregation problems 2 Datacenter 2 Distributed computer systems 2 Distributed systems 2 Economic analysis 2 Economics 2 Electric power transmission networks 2 Electronic data interchange 2 Energy efficiency 2 Gateways (computer networks) 2 Heterogeneous networks 2 Information classification 2 Information systems 2 Monitoring 2