The following are some of the easiest way to figure out a scam airdrop
1. They will ask you to donate
2. They will ask for your private key
Feel free to add yours in case there are many more.
Best regards and happy airdrop chase.
Are there still people who give their secret key to others, although they can go and in another way to learn from you all the data. Therefore, this is a shortened list, where there is obvious fraud.