Improper Leakage of Authority or Info

<<Prevention<< Up to Prevention >>Perimeter>>
Alice gives Authority to Bob. Mallet wants that authority, but Alice wants to deny this authority to Mallet. There are two binary distinctions. Multiplying these, we get four cases.
Bob on Alice's side Bob on Mallet's side
Bob and Mallet 
may not speak
Perimeter Security 
Operating Systems
Open Networks
Information Authority
Out Wall Banging Authority Out
In Durability Authority In
Bob and Mallet 
may speak
Confused Deputy Communicating Conspirators