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The WSM Module, or Wireless Security Module, is specifically designed to manage security features in a wireless environment without requiring support from individual client devices. Its capability to perform attack detection independently makes it unique in this context.

This module operates by analyzing the traffic on the wireless network, identifying and mitigating potential threats such as unauthorized access points or denial-of-service attacks. Because it functions at the network level rather than relying on endpoint agents, it provides a robust security mechanism that enhances the overall integrity of the network.

In contrast, other components like the Mobility Services Engine primarily focus on enhancing mobility features and tracking client devices rather than direct attack detection. The Wireless LAN Controller centrally manages access points but does not independently handle the detection of attacks without client support. The Firepower System, although advanced in threat defense, typically operates in wired environments or integrates with other systems for comprehensive threat management, making it less suited for the specific functionalities required in this wireless context.