The main purpose of an Intrusion Detection System (IDS) is to monitor network and system activities for malicious activities or policy violations and to alert security personnel upon detection. It operates by analyzing network traffic or system integrity for signs of unauthorized access, misuse, or attacks.
For example, an IDS might detect a pattern of traffic that matches known signatures of a specific type of malware or identify unusual login times or locations for a user account, which could indicate a potential security breach.
In the context of cloud computing, Tencent Cloud offers services like the Cloud Security Center, which includes intrusion detection capabilities to help protect cloud environments from various threats.