There has been a huge influx of passport available for sale on the Dark Web.
Also have seen posts where people are being accused of double entry into ICO's because the scammers used their passport information prior to them getting signed up.
What do you expect when people are giving their passports for random airdrop scams?
Value your privacy! Value your life! KYC on ICO's and airdrops are against the whole idea of crypto currencies. I will never buy tokens or participate in a ICO with KYC. And KYC airdrops are totally out of question.