We all are well aware of ICO
frauds.
I use the strategy to start with a whitepaper, see team member details and the roadmap.
What strategy you adopt to make sure the ICO is not a scam/fraud?
Your startegy is something that is basic.
I look at listing on ICODROPS, also videos of team AMA or conferences. Video review by Ian Balina or OHM or TGO also helps. Roadmap and WP are mostly word jargon, so no use wasting time there...