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.
This is the problem in submitting the scanned copies of our passport for ID verification. Now almost all of the crypto-exchanges are asking for ID verification, and I have sent my passport copy to at least 10-15 different exchanges. Some of these copies obviously ends up in dark markets.