Many fields, social networking. AS graphs, P2P network, security (IDS, IPS). search engine optimization, ranking algorithms, routing etc

Intrusion detection is instrumentation of a computer network for data collection.

Pattern-based software ‘sensors’ monitor the network traffic and raise ‘alarms’ when the traffic fundamental issues: How would the sensors perform? How much data

would we get? How would we display the data? What kind of data did we want to see, and what

queries would be best to highlight that data? Next, as the data came in, sensor tuning, incident

investigation, and system performance commanded our attention. The analyst team grew to

handle the load, and training and team coordination were the issues of the day.