A security incursion is a security event that results in a security incident in which an unauthorized user gains access to a system.
Attackers who try to compromise a network's security are known as intruders. They launch an attack on the network to gain illegal access. There are three different categories of intruders: miscreants, masqueraders, and covert users.
The analyzer is in charge of figuring out whether an intrusion has taken place. This component's output serves as a notification of an intrusion. An IDS's user interface enables a user to monitor system output or modify the system's behavior.
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