Another popular scam technique is called an "initial coin offering (ICO).
It's still a popular way to scam people, there are new projects coming out using ICO, but not all projects that does this are scammers right away, you have to figure out if they really are, some of them are copying other project's whitepaper and some employ fake profiles and fake credentials and they are lying about on their roadmap.
Things got so bad in 2017 that even today and I include myself among those people that anyone that listens to the word ico immediately assumes that any coin that is using that model is a scam, and even if it is unfair for the few coins that are legitimate you are going to be correct most of the time by using this thought process so I do not see why we need to change it when it has saved us a lot of money over the years by not investing in all of those scams which are floating on the market using that label.