I choose a ICO on several factors. I look if the project has a working business. The team must have open LinkedIn profiles and plus the presence of serious partners.
That's a good way of securing your investment, because if a project has been working before under a company and just decided to enter the crypto market i think that's a positive sign to invest on that since you may fully know that the team/devs behind that project knows how it works and the desire target audience.