Yes, I do. He is under sentence of death in Russia for high treason. Any attempt to communicate with people in Russia would risk said sentence being carried out. But he seems to have amazingly high-bandwidth (i.e., easily-compromised) connections with folks in Russia.
I assume that people growing up in Russia, like people growing up in China
have more than sufficient knowledge to use strictly trusted relatives and friends hand carrying or memorizing things to pass person to person on rampant travels.