# messaging\_facebook-messenger **Explanation** The messaging\_facebook-messenger NDM detects the presence and usage of the popular Facebook Messenger application on the network. When a user communicates through the application, the NDM triggers an event to provide visibility and detect potential threats. **What to Look For** To examine the results of the messaging\_facebook-messenger NDM Event, check the network traffic for Facebook Messenger activity and any suspicious behavior or communication. It is also important to perform endpoint analysis to identify any potential malware or unauthorized access through the application. This event is specifically designed to monitor and detect threats related to Facebook Messenger, so any unusual activity detected should be thoroughly investigated. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.fusion.vectra.ai/detection-models/library/operational-governance/messaging_facebook-messenger.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.