Fundamental functions of HIDS tools?

Apart from these, one of the fundamental functions of HIDS tools is an automated detection system that keeps us from the requirement of sorting the report files for suspicious behaviours after they are finished organising and compiling. Besides, Host IDS adopt certain rules and policies, out of which some are available. We can still modify and update them to make them suitable for the organization’s requirements and preferences. It helps in searching the report files, flagging the ones with an activity event that the rules may have thought could indicate potential malicious behaviour.

The host-based intrusion detection system (HIDS) can identify multiple attack vectors, including:

  • Unapproved login and access efforts
  • Escalation of privilege
  • Adjustment of application binaries, information, and file configurations
  • Installation of undesired applications and associations
  • Rogue methods
  • Crucial services that have been suspended to run

The accuracy of an IDS ties down to one of four outcomes against the observed event. It could be:

  1. A false positive is an event outcome when IDS has identified an attack but is a false alarm. These are counted as overhead, often leading to wastage of time and resources.
  2. A false negative is an event outcome when IDS actually missed alerts about the actual attack. It is the most serious state of all, adding a blind spot for security teams.
  3. A true positive is an event outcome related to the successful identification of an attack.
  4. A true negative is an event outcome when it is right to ignore acceptable behaviour.