https://www.kp.ru/daily/28351/4498766/
https://ru.krymr.com/a/rossiya-hakery-nobelium-mikrosoft-solarwinds/31532042.html
https://www.ng.ru/economics/2021-10-27/1_8288_russia.html
https://tyzhden.ua/%D0%A1%D0%B2%D1%96%D1%82/253450
https://www.nytimes.com/2021/10/25/us/politics/russia-cybersurveillance-biden.html
https://www.dw.com/ru/jelektrojenergetika-rossii-veter-i-solnce-vmesto-gaza-i-atoma/a-59572983
https://carnegie.ru/commentary/85483
https://lansinginstitute.org/2021/10/12/russian-intelligence-focus-in-bulgaria/