Injustice In Cicero's De Officies

According to Cicero’s De Officiis, one should embrace his gifts from nature rather than envy other for theirs, i.e. an artist is better off perfecting his artistic talent than studying law. He also argues that fraud is the worst form of injustice, that is, the one who “practice[s] fraud to the utmost ability [to] do it in such a way that [he] appear[s] to be [a] good m[a]n (I.13). Although Cicero condemns fraud for obvious reasons, such as, corruption, is one unjust for using this gift against the enemy?—more so, what if one uses the gift of fraudulency, ((that is to say, a trained spy)) to do good for the community? The answer to those questions is no because Cicero’s argument on fraud and justice overlap in that scenario. For example, one