China-backed Volt Typhoon hackers have lurked inside US critical infrastructure for ‘at least five years’

U.S. and allied agencies warn that China-backed APT 'Volt Typhoon' has maintained access to multiple U.S. critical infrastructure sectors for at least five years, leveraging stolen administrator credentials, exploited routers/firewalls/VPNs, and living-off-the-land techniques to pre-position for potentially destructive attacks; authorities recently disrupted the group’s KV Botnet.