Recently, I have recieved an email from a guy who call himself "Bitcointalk Center, and I was a bit confused because it's been a while since I last participated in any airdrop, especially stellar (XLM) one.
You can see a picture of this letter:
In the google form above I found some instructions regarding how to claim 7.500 XLM and the link to suspicious website, which is not official to Stellar company:
https://stellar-company.com/
http://web.archive.org/web/20200506082957/https://stellar-company.com/
In order to recieve airdrop you have to download their wallet or something like that and put there your XLM address.
I didn't install it since I have no virtual machine to run it safely and I checked it through VirusTotal and here is results:
As you can see, some engines detected trojan and I personally I believe that this whole airdrop is SCAM.
Bitcoin Center is attacking bitcointalk users to steal their private keys or something like that.
It is better for you to avoid such airdrops from unofficial websites and with use of suspicious infected wallets.
Be safe!