I have not looked thouroughly, but I don't seem to find information about the security applied to XSP's.
I want to remove all the Execute Permissions to the public role, but I don't know if this will affect in any matter to SQLServer's normal operation.
More explicitly:
Does SQLServer DBMS use this Extended Stored Procedures?
Is it allright to remove the Execute Permissions to the public role for all of the XSP's?

¡Thanks!