Bob.puml

@startuml
actor Tim
actor Bob
database Logger
Tim -> Bob: Cash Request
alt successful case
  Bob -> Tim: Cash Accepted
else some kind of failure
  Bob -> Tim: Authentication Failure
  group My own label
  Tim -> Logger : Log attack start
  loop 1000 times
  Tim -> Bob: DNS Attack
  end
  Tim -> Logger : Log attack end
end
else Another type of failure
  Bob -> Tim: Please repeat
end
@enduml