https://www.nytimes.com/2021/09/09/us/politics/russia-ransomware-hackers.html
https://apostrophe.ua/article/politics/2021-09-08/kogda-mej-bashnyami-soglasya-net/41667
https://carnegie.ru/commentary/85272
https://www.sueddeutsche.de/politik/cyberangriffe-russland-deutsche-abgeordnete-1.5402942