About 50% of Airdrop are scammers, dont fall into trap. Be wise. ALWAYS scan their custom wallet as lot of them has a built in virus in their wallet. Once the virus enters your system. It will find the Bitcoin core installed, to steal your Bitcoins. It will look for ETH private keys and record your keystrokes. Airdrop that gives coins thru Waves wallet and ETH wallet are the only safe ICO.