Name	Block user
Actor	Admin
Service	Reporting Service
Description	This use case describes the procedure of banning a user/removing their access to the system.
Pre-condition	Actor is an admin
Scenario	The system receives the task to block a user The system marks a user as marked. The system notifies the client that the block has been executed.
Result	The user to ban can not login into the system anymore and all current logins will be terminated.
Exceptions	1. System message: "unknown user" 1.1 Use case ends here