There is no way that AirBNB can protect itself against side-channel attacks from from the Russian mobsters. They are simply not capable. The US Government could not do it against the Chinese, and as a result at least 100 Million (not a typo) people's personal information - the closest family and friends of military/civilian employees with classified clearances - are now in the hands of the Chinese Government. AirBnB is asking you to send them all the info necessary to steal your identity. How long do you think it will take for the international identity mobsters to penetrate THEIR defenses? Do not send this information to AirBNB. Do not allow your ignorance of vulnerabilities to match the ignorance of AirBNB security architects.