DYOR is still the best thing that you can do before investing in a ceratain project, there are loads of scam projects right now on the market to be honest and its getting harder to avoid them... But doing background research can do something and lessen your chance to lose your money. Only invest what you can afford to lose anyways
Many suggestions like this have been given in this forum in previous years, because everyone who invests must always check the background of the project first, because investors also want to get to know the team and project more fully and closely.