On 2024-02-07, CISA, NSA, and the FBI issued a joint advisory attributing confirmed intrusions into U.S. critical infrastructure to PRC state-sponsored actor Volt Typhoon [1]. The agencies confirmed that affected environments span communications, energy, transportation, and water sectors, assessing that the actors are pre-positioning access to disrupt operations in the event of a crisis or conflict [1]. The agencies urge organizations to patch internet-facing appliances, deploy phishing-resistant multi-factor authentication (MFA), enable centralized logging, and conduct threat hunting in accordance with the advisory [1].
Backfill: this event became public on Feb 7, 2024 and we added it on Nov 10, 2026. It is not a new event.
CriticalMonitoringBackfillOfficially confirmed
CISA Releases Volt Typhoon Advisory Warning of Pre-Positioning Activity Against U.S. Critical Infrastructure
1 min read
- Disclosed
- Feb 7, 2024
- Published
- Nov 10, 2026
- Last updated
- Nov 7, 2026
- CVSS basis
- Our assessment
- Attack vector
- Actor type
- Motivation
- Threat actor
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Government, Energy, Cross-industry
What to do nowOur advice
The agencies urge organizations to patch internet-facing appliances, deploy phishing-resistant multi-factor authentication (MFA), enable centralized logging, and conduct threat hunting in accordance with the advisory [1].
Timeline
- CISA publishes advisory on Volt Typhoon[1]
Technical details
Verified Official Advisory
On 2024-02-07, CISA, NSA, and the FBI issued a joint advisory attributing confirmed intrusions into U.S. critical infrastructure to PRC state-sponsored actor Volt Typhoon [1].
The agencies confirmed that affected environments span communications, energy, transportation, and water sectors, assessing that the actors are pre-positioning access to disrupt operations in the event of a crisis or conflict [1].
The agencies urge organizations to internet-facing appliances, deploy phishing-resistant (MFA), enable centralized logging, and conduct threat hunting in accordance with the advisory [1].
References
Official / primary1
- [1]PRC State-Sponsored Actors Compromise and Maintain Persistent Access to U.S. Critical Infrastructure
“Volt Typhoon primarily relies on valid credentials for persistence [T1078].”
This site aggregates public information and is not security consulting advice. Test remediation steps before applying.