 Suppose an undercover police officer offers a “bribe” to a corrupt judge for the purpose, supposedly, of getting the judge to pass a lenient sentence on a known mafia crime boss. The police officer is actually engaged in a so-called “sting” operation as part of an anti-corruption strategy. The judge accepts the bribe and is duly convicted of a criminal offence and jailed. (Let us also assume that the judge is already so corrupt that he will not be further corrupted by being offered the bribe.) The police officer offers the bribe for the purpose of achieving a moral good, i.e., convicting a corrupt official. However, we are disinclined to call this a case of corruption. Presumably the reason for this is that in this context the “bribe” does not have a corrupting effect; in particular, it does not succeed in undermining the judicial process of sentencing the crime boss. So this is a case in which a prima facie act of noble cause corruption turns out not be an act of corruption, and therefore not an act of noble cause corruption. A less straightforward case is the one where the action does have a corrupting effect. Consider two possibilities: (i) The sting is continued for a while (to catch other corrupt judges) and paid for (by bribes) verdicts are temporarily enforced during the sting; (ii) The process of considering and accepting the money offered by the disguised police officer further despoils the judge’s character but has no further effect on court proceedings (because the judge is arrested within minutes). In both cases, arguably, the officer conducting the sting operations committed an act of corruption.