Sen. Ron Wyden says the US Treasury Department acknowledged that its email system used by senior leadership was breached by SolarWinds hackers beginning in July (New York Times)

New York Times:
Sen. Ron Wyden says the US Treasury Department acknowledged that its email system used by senior leadership was breached by SolarWinds hackers beginning in July  —  The disclosure was the first acknowledgment of a specific intrusion in the vast cyberattack.