Embedding - disable user

Within Embedding Settings -> Username for topic creation I have defined user to create new topics automatically. This works great. However, I feel that this user posses a great risk and it feels like I have a loose end waiting to be exploited.

Is there a way to temporarily disable the Embedding user? I have tried to silence the use but got error saying There was a problem silencing the user.

With our website there is no need for this user to be enabled all the time.

Thank you