Russia Carried Out 'Stunning' Hack of Encrypted FBI Communications: Report

[FakeNoose]

8. The Yahoo News article addresses that question

Further quote from the OP:

While the Russians may have developed this capability by themselves, senior counterintelligence officials also feared that someone from within the U.S. government — a Russian mole — may have helped them, said former officials. “You’re wondering, ‘If this is true, and they can do this, is this because someone on the inside has given them that information?’’ said another former senior intelligence official.

Mark Kelton, who served as the chief of counterintelligence at the CIA until he retired in 2015, declined to discuss specific Russian operations, but he told Yahoo News that “the Russians are a professionally proficient adversary who have historically penetrated every American institution worth penetrating.”

This remains a core worry for U.S. spy hunters. The number of ongoing espionage investigations into U.S. government personnel — at the CIA, the FBI and elsewhere — including those potentially recruited by Russia, “is not a little, it’s a lot,” said another former senior counterintelligence official.

It seems the FBI must assume that the Russians can hear everything, can hack everything.
This is a full-on war.