https://www.cyberghostvpn.com/ru_RU/dns-leak-test

2023
BlackTriangle - How ZH Bypass Locks p2 0:00 of 12:24
    https://www.youtube.com/watch?v=4wB8X_b-OFo
BlackTriangle - How ZH Bypass Locks p1 0:00 of 14:05
    https://www.youtube.com/watch?v=eoUx2QG8ngw
https://habr.com/ru/companies/xeovo/articles/768698/
    ! market distribution
2022
https://habr.com/ru/company/dsec/blog/499718/
2021
https://habr.com/ru/company/timeweb/blog/581982/