A multi-application IC card may include a runtime environment for managing executions of a plurality of stored application. Each application may include a set of rules, to be satisfied by their execution, and a corresponding set of reactions, to be taken if the rules are not satisfied. The runtime environment may include security and reaction registers to reference, respectively, the set of rules and reactions associated with the applications. A security policy manager may initialize, for each application, a reference between the security registers and the rules set between the reactions register and the reactions set. Checking the rules set and/or an activation of the reactions set is controlled by the security policy manager through the security registers and reaction registers. The security policy manager may include a registration function for initializing the security and reaction registers. The registration function may be called from the applications or an administrative user.