1. Early Detection: An Intrusion Detection System (IDS) can detect malicious activity on a network or system before it causes any damage. For example, if a hacker attempts to access a system with an incorrect password, an IDS can detect this and alert the system administrator.
2. Prevention: An IDS can also be used to prevent attacks by blocking suspicious traffic or activity. For example, an IDS can be configured to block connections from known malicious IP addresses or to detect and block malicious payloads in emails.
3. Increased Visibility: An IDS can provide the system administrator with visibility into the activity on a network or system. For example, an IDS can provide detailed logs of all incoming and outgoing network traffic, including the source and destination IP addresses, as well as the type of traffic.
4. Automated Response: An IDS can be configured to respond to certain types of malicious activity automatically. For example, an IDS can be configured to block connections from known malicious IP addresses or to detect and block malicious payloads in emails.