What is intrusion detection in cybersecurity?

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Multi-factor authentication (MFA) is a security process that requires users to provide two or more different types of verification before they can access an account or system. It adds an extra layer of protection beyond just a username and password.

Intrusion detection in cybersecurity is the process of monitoring computer systems or networks to identify unauthorized access, malicious activities, or policy violations. The main goal is to detect potential security breaches or attacks as early as possible to prevent damage or data loss.


Key points about Intrusion Detection:

  • It involves analyzing network traffic, system logs, and other data sources to spot suspicious behavior.

  • Intrusion detection systems (IDS) use predefined rules, patterns, or machine learning techniques to recognize threats.

  • IDS can detect various attacks like malware infections, unauthorized logins, data theft, or denial-of-service (DoS) attacks.


Types of Intrusion Detection:

  1. Network-based IDS (NIDS): Monitors network traffic for suspicious patterns across devices in a network.

  2. Host-based IDS (HIDS): Monitors activities on individual devices or servers, analyzing system logs, file changes, and user behavior.


Why Intrusion Detection Matters:

  • Early detection helps organizations respond quickly to threats.

  • It enhances overall security by identifying vulnerabilities or ongoing attacks.

  • Works alongside other tools like firewalls and antivirus to protect systems.


In summary, intrusion detection is a crucial cybersecurity practice that helps identify and respond to unauthorized or harmful activities to keep computer systems and networks safe.

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