Also, do not click on unsolicited links, download apps or grant certain permissions to some apps on your device.
This is the case where mostly fell on this scheme. Many of my friends got compromise cause of too much joining on airdrop and they got hacked because of the app they downloaded. Tsk, greedyness will be the reason of their downfall sometime.
But sometimes people falls unconsciously due to greedy nature. Usually people become more greedy when they see there is free money but they don't know nothing is free on the world.
Free money is very tempting indeed but I can't agree that there is nothing free on this world. There still some who really gave away some free tokens or cryptocurrency such as bitcoin for simple task like retweeting. But airdrops associated with clicked link task should be the one they should avoid like what's OPs topic. Also Private key is a common sense that should not be divulge to anyone.
To get an airdrop, they asking wallet private key for verification! I heard this first time!
OP, this isn't new scheme many airdrops in the past which uses Google form frequently ask the private key and some still fall for this. I dont know if they really doesn't know or just too desperate for the amount offer of the giveaway.
Anyway nice thread this can keep remind them about this kind of scam. Hope they read and absorb what is written here.