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, Yandex, Privatbank). Aleksandr is interested in uncommon security issues, telecom problems, privacy, and social engineering. Speaker at PHDays 2018, c0c0n 2018, DeepSec 2018 and BSides.