We have previously proposed a new type of pattern, the misuse pattern. The misuse pattern describes how a misuse is performed from the point of view of the attacker, what system units it uses and how, provides ways of stopping the attack by enumerating possible security patterns that can be applied for this purpose, and provides forensic information. A catalog of misuse patterns is needed to let designers evaluate their designs with respect to possible threats. On the other hand, Inter-Cloud systems grow in popularity, and some of them are federated Inter-Clouds, which allow their Service Providers to share resources when needed. We present here a misuse pattern for this kind of system. The possibility of using a false Service offered by a malicious Service Provider could lead to the leakage of information. The purpose of this paper is threefold. First, analyze the federated Inter-Cloud proposals in order to determine a list of Actors and their respective use cases. Second, describe how to reveal threats from the use cases. In third place, add a new misuse to the misuse catalog for federated Inter-Cloud systems. These misuse patterns will be used to improve the design of federated Inter-Cloud systems.