https://ru.krymr.com/a/ssha-rossiyskie-hakery-kiberataka/31012276.html
https://www.liga.net/world/articles/razoblachenie-fsb-chto-ostalos-za-kadrom-istorii-s-navalnym
https://www.dw.com/ru/kommentarij-navalnyj-protiv-fsb-raund-vtoroj/a-56027724
https://www.radiosvoboda.org/a/31012007.html
https://www.inopressa.ru/article/21Dec2020/spiegel/spionage.html
https://www.bbc.com/russian/news-55396251