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How Intrusion Detection Technology Keeps Your Network Secure

29 November 2023

To ensure maximum network security, it is important to investigate all potential vulnerabilities thoroughly. Having reliable intrusion detection technology is essential to avoid possible cyber threats. 

This blog post will explore intrusion detection technology and its benefits in keeping sensitive data safe from online security risks. All businesses must take this seriously in the ever-evolving world of cybersecurity.

What Is Intrusion Detection Technology?

Intrusion Detection Technology (IDT) or Intrusion Detection Systems (IDS) are essential tools in the field of cybersecurity. These are technologies and strategies designed to detect and respond to unauthorised activities. The goal is to identify attempts to compromise information and resources’ confidentiality, integrity, or availability. IDT is critical in safeguarding digital assets and protecting organisations from potential threats.

An IDS monitors network traffic, system logs, and other relevant data sources in real-time, searching for suspicious patterns, behaviours, or anomalies that may indicate an ongoing or potential security breach. The system analyses network packets, system events, and user activity to detect signs of unauthorised access, malware infections, data breaches, or other malicious actions. There are two primary types of intrusion detection technology.

  1. Network-based Intrusion Detection System (NIDS): NIDS monitors network traffic and analyses network packets to identify potential threats. It operates at the network perimeter or within the internal network, examining the content and headers of packets to detect known attack signatures or abnormal network behaviour.
  2. Host-based Intrusion Detection System (HIDS): HIDS resides on individual hosts or servers and monitors activities occurring on the host. It inspects system logs, file integrity, user activities, and other host-specific information to detect signs of compromise or unauthorised access.

Intrusion detection technology also utilises other detection methods, including signature-based, anomaly, and behaviour-based. Signature-based detection involves comparing observed patterns against a database of known attack signatures.

Anomaly detection focuses on identifying deviations from the normal network or system behaviour. Behaviour-based detection establishes baselines of expected behaviour and raises alerts when activities fall outside those predefined patterns.

Upon detecting a potential intrusion or security incident, an IDS can generate alerts, send notifications to system administrators or security personnel, or even take automated actions like blocking network traffic or quarantining compromised hosts.

Benefits of Getting an Intrusion Detection System

Intrusion detection technology offers a wide range of benefits to businesses, including:

  1. Early Threat Detection: An effective intrusion detection system is an early warning mechanism for security breaches. The tool can track network traffic and system behaviour in real-time, which helps organisations quickly recognise and address potential threats before they cause damage. By detecting intrusions early, businesses can take proactive measures to minimise risks and prevent further compromise.
  2. Improved Incident Response: IDS alerts and notifications are useful for organisations to respond promptly and efficiently to security incidents. These alerts can be sent to security personnel or administrators for investigation and action. This immediate incident response helps minimise the impact of security breaches, which can result in less downtime, data loss, and financial losses.
  3. Enhanced Network Visibility: By analysing network traffic, examining packets, and monitoring user behaviour, intrusion detection systems offer organisations a comprehensive view of their network activities. This increased visibility is instrumental in identifying vulnerabilities, suspicious activities, and potential attack vectors, empowering businesses to strengthen their security infrastructure and enhance their overall security posture.
  4. Protection Against Known Threats: An intrusion detection system with signatures can detect known attack patterns and threats. It compares network traffic to a database of known signatures to identify any signs of malicious activity. With an IDS in place, businesses can protect themselves from common attacks and malware, which reduces the risk of successful attacks.
  5. Detection of Unknown Threats: Intrusion detection systems use more than known signatures to detect potential cyber threats. They analyse network behaviour and identify abnormalities that could signal new attacks. These systems can spot deviations suggesting a zero-day attack. This proactive approach helps organisations stay protected against evolving threats.
  6. Regulatory Compliance: Many industries and jurisdictions have specific regulations and compliance requirements regarding information security. Implementing an intrusion detection system can assist businesses in meeting these requirements. IDS helps monitor and safeguard sensitive data, detect unauthorised access attempts, and provide audit logs and reports necessary for compliance audits.
  7. Reduced False Positives: Intrusion detection systems have evolved to minimise false positives effectively, alerts triggered by legitimate network activities mistakenly identified as malicious. Using advanced algorithms and machine learning techniques, IDS can accurately differentiate between benign and malicious activities, thus minimising false positives and enabling security teams to concentrate on actual threats.
  8. Forensic Analysis: Network intrusion detection systems often offer comprehensive records and logs of network activities, which can be immensely useful for forensic analysis in case of a security breach. These logs can aid in reconstructing attack timelines, assessing the extent of a breach, and gathering evidence for legal or disciplinary actions.

For forensic analysis in a security breach, logs can assist in piecing together an attack’s timeline, determining the breach’s scope, and gathering evidence for legal and disciplinary action. Implementing an intrusion detection system is essential. They also help organisations meet compliance requirements and improve their overall security posture.


Overall, using intrusion detection technology can greatly enhance a business’s security. This effective and reliable form of modern cybersecurity can shield sensitive data from ever-growing online threats. The vigilance and consistency that intrusion detection technology provides can save businesses loss of time, resources, and funds—all key components for success.

An intrusion detection system is highly recommended to protect your networks from cyberattacks. Technology continually evolves, so having this resource on your side is one of the best defences in today’s digital landscape. Plus, you get peace of mind knowing you’ve safeguarded your networks!

Intrigued by the world of cyber security? Learn how to protect your network and assets with Knowledge Tree by joining us for our specialised and in-depth courses here