Aleksandr Kolchanov is an independent security researcher and consultant. Ex penetration tester of a bank in Russia. He takes part in different bug bounty programs - PayPal, Facebook, Yahoo, Coinbase, Protonmail, Telegram, etc., and holds the first place the Privatbank bug bounty program (one of biggest banks in the Ukraine). Aleksandr also won the "Hack Internet-Bank" competition of PromSvazBank, Russia. He's interested in uncommon security issues, telecom problems, airline security and social engineering.