We have some requirement in our project to imply security level when writing to an event stream. Currently we are using TCP by .NET API and using CQRS method. Our events are getting appended to existing streams but there is no authorization options available to check for proper authentication before writing to any new events. I was wondering is there any option I am not aware of to implement the security before writing a new event to the Event Store stream? I was looking in documentation and there is some option via HTTP called “Authorization” while appending new events. It would be great if we can set authorization option to write events with TCP using .NET Client API. We are using the method showed in the pictures. If we don’t pass any User Credentials, it just treat as null values as default and appends the vents successfully. Is there any way to prevent this scenario?