I am glad that you have responded. Here is the detailed information. I am currently working on creating an application that provides 2 step verification for Screen Sharing application on MacOS. So when we get a request from the agent/client system they get connected without a small notification. So at the time when they get connected if we can prompt a second step verification it will alert the user. So that is what I am trying to do. I tried to find notifications so that I can add a DNC Observer. I have gone through all the logs but couldn’t find any. There is not even a single documentation related to this. So I have gone through VNC protocol and I tried to add a server program using Vapor, which can read username and password from the incoming request and I have already given the details of what happened. I want to read the data of the request so that I can request for second step authentication with the given credentials and provide the 2FA with our product. I cannot alter the request coming from the client. So I want to change it on the server. Thank you for your response, Hoping to hear from you soon. Manasa