Actually there is no tools to detect fake ico and bounty. I think it is not easy to detect fake icos and bounties because now there are lots of fake iicos and bounties. We can't 100% identify but we can find some fake one using some methods. Firstly, we must consider about the project of the ico. Then we must consider about rating of the ico in ico rating sites and experts ideas about the project. Then we must consider about team members and advisors.If we consider about those things we can identify some fake icos.