RIA Novosti is claiming the White House has encrypted Russian communication facilities developed by Rostek-based Concern Radio-Electronic Technologies
ria.ru/world/20180823…
ria.ru/world/20180823…
The Obama administration imposed sanctions through the US Department of Treasury's OFAC by adding Concern Radio-Electronic Technologies and other entities to the Specially Designated Nationals List (SDN) in retaliation for the ongoing Ukrainian crisis. en.m.wikipedia.org/wiki/Concern_R… 
RIA Novosti is Russia's state-run propaganda company. en.m.wikipedia.org/wiki/RIA_Novos…
March 2017:
Russian ambassador told Moscow that Kushner wanted secret communications channel with Kremlin
washingtonpost.com/world/national…
Russian ambassador told Moscow that Kushner wanted secret communications channel with Kremlin
washingtonpost.com/world/national…
"Kislyak reportedly was taken aback by the suggestion of allowing an American to use Russian communications gear at its embassy or consulate — a proposal that would have carried security risks for Moscow as well as the Trump team."
"The complex [...] was tested by US specialists and recommended by them for equipping the Moscow-Washington straight line. All the years of the existence of a direct line it uses only Russian-made equipment," the source said. kommersant.ru/doc/3720530
In May, Sputnik News announced that Concern Avtomatika designed a "cryptophone, the first in Russia, which will be available to security forces and business people who want protection against eavesdroppers." sputniknews.com/russia/2018052…
The U.S.-Russia hotline was established in 1963, in the wake of the October 1962 Cuban missile crisis. Russia is now taking credit for the technology behind it.
"the President could at any time appoint new locations for additional Hotline terminals. The location of any additional terminals would be classified as “Secret.” Whether or not this has happened is currently unknown." juliadavisnews.com/articles-about…
"The news articles about “the secret line” between the Kremlin and the White House might carry an implied threat to leak the content of communications between Trump and Putin, unless concrete measures to derail the sanctions are taken by the Trump administration."
