CISA's CI Fortify Initiative: Strengthening Critical Infrastructure Resilience
Executive Summary
In May 2026, the Cybersecurity and Infrastructure Security Agency (CISA) launched the 'CI Fortify' initiative to bolster the resilience of U.S. critical infrastructure against state-sponsored cyber threats, particularly from Chinese groups Salt Typhoon and Volt Typhoon. This program focuses on enabling essential services to operate independently for extended periods by isolating operational technology (OT) networks from IT systems and third-party connections during emergencies. (cyberscoop.com)
The urgency of this initiative is underscored by recent cyber activities targeting critical sectors such as electricity, water, and telecommunications. These incidents highlight the need for infrastructure operators to develop and implement isolation and recovery plans to maintain service continuity amidst potential cyber disruptions. (cyberscoop.com)
Why This Matters Now
The increasing sophistication and frequency of state-sponsored cyberattacks on critical infrastructure necessitate immediate action to ensure operational resilience. Implementing isolation and recovery strategies is crucial to safeguard essential services against potential disruptions. (cyberscoop.com)
Attack Path Analysis
The Salt Typhoon group exploited vulnerabilities in Citrix NetScaler Gateway appliances to gain initial access to European telecommunications networks. They then escalated privileges by deploying Snappybee (Deed RAT) malware through DLL side-loading techniques. Utilizing living-off-the-land binaries, they moved laterally within the network to discover and access sensitive systems. The attackers established command and control channels by embedding malicious DLL files alongside legitimate executables. They exfiltrated sensitive data by disguising malicious DLL files as legitimate antivirus software components. The impact included unauthorized access to sensitive intelligence and law enforcement communications, compromising critical infrastructure.
Kill Chain Progression
Initial Compromise
Description
Exploited vulnerabilities in Citrix NetScaler Gateway appliances to gain initial access.
MITRE ATT&CK® Techniques
Exploit Public-Facing Application
Command and Scripting Interpreter: PowerShell
Server Software Component: Web Shell
Indicator Removal: File Deletion
Valid Accounts: Local Accounts
Exfiltration Over C2 Channel
Exfiltration Over Alternative Protocol
Potential Compliance Exposure
Mapping incident impact across multiple compliance frameworks.
NIST Special Publication 800-53 – Boundary Protection
Control ID: SC-7
PCI DSS 4.0 – System and Application Security
Control ID: 6.2
NYDFS 23 NYCRR 500 – Cybersecurity Policy
Control ID: 500.03
Digital Operational Resilience Act (DORA) – ICT Risk Management Framework
Control ID: Article 5
CISA Zero Trust Maturity Model 2.0 – Identity Governance
Control ID: Identity Pillar
NIS2 Directive – Cybersecurity Risk Management Measures
Control ID: Article 21
Sector Implications
Industry-specific impact of the vulnerabilities, including operational, regulatory, and cloud security risks.
Utilities
Critical power and water infrastructure face prolonged isolation requirements against Salt/Volt Typhoon APTs targeting OT systems through compromised IT networks and telecommunications equipment.
Telecommunications
Telecom networks compromised by Chinese state-sponsored groups require immediate hardening and isolation capabilities to prevent lateral movement into connected critical infrastructure sectors.
Government Administration
Federal and local government systems supporting national security and public safety must implement weeks-to-months isolation protocols against persistent state-sponsored infiltration attempts.
Defense/Space
Military installations and defense contractors face heightened risk from APT groups exploiting third-party vendor connections and require enhanced segmentation and egress controls.
Sources
- CISA wants critical infrastructure to operate ‘weeks to months’ in isolation during conflicthttps://cyberscoop.com/cisa-ci-fortify-critical-infrastructure-isolation-recovery-guidance-during-conflict/Verified
- Volt Typhoon targets US critical infrastructure with living-off-the-land techniqueshttps://www.microsoft.com/security/blog/2023/05/24/volt-typhoon-targets-us-critical-infrastructure-with-living-off-the-land-techniques/Verified
- Salt Typhoon is hacking the world’s phone and internet giants — here’s everywhere that’s been hithttps://techcrunch.com/2026/03/09/salt-typhoon-china-who-has-been-hacked-global-telecom-giants/Verified
Frequently Asked Questions
Cloud Native Security Fabric Mitigations and ControlsCNSF
Aviatrix Zero Trust CNSF is pertinent to this incident as it could have limited the attacker's ability to exploit vulnerabilities, escalate privileges, and move laterally within the network, thereby reducing the overall blast radius.
Control: Cloud Native Security Fabric (CNSF)
Mitigation: Implementing Aviatrix CNSF would likely have constrained unauthorized access by enforcing strict identity-based policies, thereby reducing the attacker's ability to exploit known vulnerabilities.
Control: Zero Trust Segmentation
Mitigation: Aviatrix Zero Trust Segmentation would likely have restricted the malware's ability to escalate privileges by enforcing least-privilege access controls, thereby limiting the attacker's scope.
Control: East-West Traffic Security
Mitigation: Aviatrix East-West Traffic Security would likely have limited lateral movement by monitoring and controlling internal traffic, thereby reducing the attacker's ability to access sensitive systems.
Control: Multicloud Visibility & Control
Mitigation: Aviatrix Multicloud Visibility & Control would likely have identified and constrained unauthorized command and control channels, thereby reducing the attacker's ability to maintain persistence.
Control: Egress Security & Policy Enforcement
Mitigation: Aviatrix Egress Security & Policy Enforcement would likely have restricted unauthorized data exfiltration by controlling outbound traffic, thereby reducing the risk of data loss.
Implementing Aviatrix Zero Trust CNSF would likely have reduced the scope of unauthorized access, thereby limiting the potential compromise of critical infrastructure.
Impact at a Glance
Affected Business Functions
- Electricity Distribution
- Water Supply Management
- Telecommunications Services
Estimated downtime: 30 days
Estimated loss: $5,000,000
Potential exposure of operational data related to critical infrastructure systems, including control protocols and system configurations.
Recommended Actions
Key Takeaways & Next Steps
- • Implement robust network segmentation to limit lateral movement within the network.
- • Deploy intrusion prevention systems (IPS) to detect and block exploitation attempts.
- • Enforce strict egress filtering to prevent unauthorized data exfiltration.
- • Utilize anomaly detection systems to identify and respond to unusual network activities.
- • Regularly update and patch all systems to mitigate known vulnerabilities.
