The vast majority of initial coin offering (ICO) projects promising, for example, team token vesting periods or no additional tokens minted after the ICO have no code in their smart contracts to keep those promises, a study finds. Of the top 50 projects that the team analyzed, only 10 of them actually contained all of the relevant code in their contracts.
https://cryptonews.com/icos/investor-protection-never-heard-of-it-analysis-of-top-icos-2274.htm