You know how banks have someone who's job title is something like "Head Of Fraud"? Who's role is to work out what a "reasonable" allowable amount of fraud is, small enough that it can be de-risked and budgeted for, but not so small it becomes "more expensive that it's worth" to fight it? An then to put processes in place to monitor fraud and ensure no more fraud occurs that planned for?

That's what _I'm_ imagining a "VP of Integrity" at Facebook does.