A successful security management system must be layered, as well as agile. To provide robust security, a combination of preventative and detective controls must be applied to the network, hosts and devices, applications, services and transports as well as to the data itself, creating defence in depth.
Correlating events from multiple sources, both logical and physical, using a security information and event management solution (SIEM) allows anomalies to be identified. The SIEM should be context aware, able to understand normal behaviour patterns including time, location, device, connection method, application and information requested.
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