July 22, 2020

How Do Intrusion Detection Systems (IDS) Work?

What are Intrusion Detection Systems?

Cyber security protection is becoming a vital necessity for small and midsize businesses. With the recent COVID-19 pandemic forcing a shift to remote working, the threat landscape has expanded overnight. Therefore, businesses must implement an Intrusion Detection System that is capable of monitoring for security events and attacks on the network.

An Intrusion Detection System (IDS) is a piece of hardware and software that identifies and mitigates threats and attacks on your network. The IDS collects and analyses information on malicious activities and reports them to a SOC (Security Operations Centre) for cyber security experts to analyse.

What does an Intrusion Detection System do?

Intrusion detection systems use two methods of detection:

  • Signature-based detection, which takes data activity and compares it to a signature or pattern in the signature database. For instance, signature-based detection has a constraint whereby a new malicious activity that is not in the database is ignored.
  • Behaviour-based detection, unlike signature-based, detects any anomaly and provides alerts; which means it is capable of detecting new types of attacks. It is referred to as an expert system as it learns what normal behaviour in your system looks like, for instance.

At m3 we use an Intrusion Detection System that uses BOTH of the above detection methods along with human-based analysis detection.

What are the different types of Intrusion Detection Systems?

To find out, continue to part 2 of this article here.

Are you looking to purchase an Intrusion Detection System?

If you want to protect your business network with an Intrusion Detection System, call us today on 01738 237001


cyber security, intrusion detection, network security

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