[curiously]

that's a great point, however the fact that those haven't been solved yet suggests that the problem is actually very difficult. These type of problems I would shy away from because the results wouldn't be consistent.

For example, catching a fraudster based on their actions for your website is easy because you can create models with scope limited to your own website with few constraints vs. catching any fraud on any website because they all have different processes, scopes and constraints wildly fluctuate.