CISA and the National Security Agency (NSA) have published a joint
cybersecurity advisory about control system defense for operational technology
(OT) and industrial control systems (ICSs). Control System
Defense: Know the Opponent is intended to provide critical infrastructure
owners and operators with an understanding of the tactics, techniques, and
procedures (TTPs) used by malicious cyber actors. This advisory builds on NSA
and CISA 2021 guidance provided to stop
malicious ICS activity against connect OT, and 2020 guidance to reduce
OT exposure.
CISA and NSA encourage critical infrastructure owners and operations to
review the advisory, [Control System Defense: Know the Opponent], and apply the
recommended mitigations and actions. For more information on CISA’s resources
and efforts to improve ICS cybersecurity, visit CISA’s role in industrial control systems webpage.