A practice that monitors inbound and outbound network traffic for suspicious activity and threats. Intrusion detection systems with sensors on the network are called NIDS (network intrusion detection systems), while intrusion detection systems that have sensors planted on devices are called HIDS (host intrusion detection systems). NIDS monitor and analyze in real-time, while HIDS look at historical data, typically on machines that aren’t expected to have changes.
Intrusion Detection
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