The present relates to a method for verifying privileged and subject-executed code within a program, the method further comprising the steps of constructing a static model of a program, identifying checkPermission nodes that are comprised within the invocation graph, and performing a fixed-point iteration, wherein each determined permission set is propagated backwards across the nodes of the static model until a privilege-asserting code node is reached. The method further comprises the steps of associating each node of the invocation graph with a set of Permission allocation sites, analyzing each identified privilege-asserting code node and subject-executing code node to determine the Permission allocation site set that is associated with each privilege-asserting code node and subject-executing code node, and determining the cardinality of a Permission allocation-site set that is associated with each privilege-asserting code node and subject-executing code node.