If I was doing this at Google, I would spend a lot of time thinking about test fraud. At a 40-50 person company? Not so much. We do simple follow-up things that raise the amount of effort you'd have to put in to fraudulently submitting work sample tests, and we know pretty exactly how we'd randomize our work sample tests to make it hard to cheat (at least, hard to cheat without doing something we'd be interested in anyways) --- but it's just not worth it right now.
Work sample test fraud is one of those things that sounds like a huge deal on message boards, but when you game through what would be involved in doing it in real life, it makes very little sense.
Work sample test fraud is one of those things that sounds like a huge deal on message boards, but when you game through what would be involved in doing it in real life, it makes very little sense.