I never give private key and I don't join airdrop that request Eth donation. Are there some other potential risk in joining an airdrop giving for examples my mail address, my twitter and telegram account and other basic information? I also use dedicated profile to join them. Thanks!
as far as you are not giving your private keys , you are safe ,
and also
1) never disclose your original email ,
2) never use same password which you are using for your email . use always different one when you are signing up .
3) and of course never share your private key for any of your address .
4) do a complete research on company when you are sharing social accounts with them during signing up.