Quick follo up. There airdrops that require to install a chrome app (or other app). These apps ususally contain hidden miners or spying applications. Always think twice before installing such apps.
Didn't know that some airdrops requiring their participants to install an application or extension to mine cryptocurrency, thanks for the heads up but It is fishy to tell that they want to install some random applications that may contain some viruses and backdoors to steal the user's data and wallets, It should not be required in the first place and risky at the same time if the tokens are based on an ERC20 wallets why the hell they want to install something? 90% it is a virus or a hidden miner.