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The neural system of most of the enterprises is the network. With the emergence of social networking, video streaming, peer-to-peer technology, cloud computing and SaaS, it's safe to say that modern enterprises are only as good as their networks especially in terms of the bandwidth and security they provide. Be it banks securing their data against thefts or business organizations securing their network against security threats and attacks, the lurking threat of getting breached, compromised and damaged by an unknown zero-day intruder is always relevant. Moreover, continuous evolution of intrusion techniques has made the task of ensuring network security increasingly difficult in spite of becoming all the more critical.

Predominantly, the security systems are classified into three types. They are Firewall Systems, Intrusion Detection/Prevention (IDS/IPS) Systems and Network Behavior Analysis (NBA) Systems also known as Network Behavior Anomaly Detection (NBAD) Systems. While all three of them have their own unique strengths and weaknesses, they complement each other to form a holistic network security strategy. However, the first two are widely prevalent and perceived as essential components, the third is not so. This leaves the network vulnerable to several zero-day attacks, unknown worms, internal threats, etc., as well as letting them lag behind in terms of overall traffic visibility, access policy decisions, security posture assessment and a reasonably sure confirmation of network security.