https://www.gazeta.ru/comments/column/s77233/12143143.shtml
https://www.gazeta.ru/politics/2019/01/26_a_12144889.shtml
https://www.kommersant.ru/doc/3866025
https://www.kommersant.ru/doc/3866036
http://www.kasparov.ru/material.php?id=5C4C926E9C7C2
Files and messages on Russia’s war in Ukraine, the business dealings of oligarchs and other issues were published online by a group called Distributed Denial of Secrets.
https://www.nytimes.com/2019/01/25/world/europe/russian-documents-leaked-ddosecrets.html