Full Report
Today’s ransomware numbers tell a stark story. The Department of Homeland Security reported more than 5,600 publicly-disclosed ransomware attacks worldwide in 2024, nearly half of them in the United States. The FBI found that ransomware incidents increased nearly nine percent year over year, with almost half targeting critical infrastructure. Attacks on these organizations pose the greatest threat to national security…
Analysis Summary
# Best Practices: Ransomware Defense for Critical Infrastructure
## Overview
These practices address the rapidly evolving ransomware landscape, where attackers have compressed operational timelines from weeks to hours and specifically target critical infrastructure. The goal is to move from reactive mitigation to a proactive, national security-aligned defense posture that protects human life and essential services.
## Key Recommendations
### Immediate Actions
1. **Lock Down EDR/XDR Configurations:** Review and harden Endpoint Detection and Response (EDR) settings. Attackers are prioritizing the disabling of these tools immediately upon entry; ensure tamper protection and "prevent mode" are enabled.
2. **Asset Inventory:** Identify all critical infrastructure dependencies. In recent attacks, even secondary system outages (like JetBlue’s departure systems) have had immediate cascading operational impacts.
3. **Credential Hardening:** Enforce Multi-Factor Authentication (MFA) across all remote access points to counteract the surge in credential-based breaches.
### Short-term Improvements (1-3 months)
1. **Deploy Managed Detection and Response (MDR):** Since attackers now operate in a matter of hours, 24/7 monitoring is required to catch lateral movement before the encryption phase.
2. **Patch Management for CVEs:** Ensure the vulnerability management program is fully funded and operational, prioritizing high-risk vulnerabilities newly identified in the CVE database.
3. **Supply Chain Audit:** Review service provider access. Recent breaches (e.g., Ericsson U.S.) highlight that third-party service providers are frequent vectors for initial access.
### Long-term Strategy (3+ months)
1. **Align with the National Cyber Strategy:** Shift organizational strategy to treat cyber threats as top-tier national security risks, integrating with federal interagency cells and critical infrastructure pilots.
2. **Adopt Zero Trust Architecture:** Transition away from perimeter-based security to a model where every access request is verified, regardless of origin, to limit the impact of compromised accounts.
3. **Resilience Drills:** Conduct tabletop exercises that simulate a total system loss to ensure manual workarounds exist for critical services.
## Implementation Guidance
### For Small Organizations
- Focus on "Security Essentials." Implement hardware-based MFA and automated patching for public-facing servers.
- Utilize free resources from CISA and the FBI to stay updated on current ransomware indicators of compromise (IOCs).
### For Medium Organizations
- Implement segmented backups that are kept offline or in immutable cloud storage to ensure recovery is possible without paying ransoms.
- Invest in dedicated security personnel or a reputable MSSP (Managed Security Service Provider).
### For Large Enterprises
- Participate in information-sharing programs (ISACs) to gain early warning on threats targeting your specific sector.
- Implement advanced threat hunting to detect "sleeper cells" or persistent threats within the network before they activate.
## Configuration Examples
While specific code is not provided in the briefing, the following technical focuses are emphasized:
- **EDR Tamper Protection:** Set policy to `Action: Block` and enable `Password Protection for Uninstallation`.
- **MFA:** Disable "SMS-based" MFA in favor of FIDO2 security keys or authenticator apps to prevent SIM swapping.
## Compliance Alignment
- **NIST Cybersecurity Framework (CSF) 2.0:** Focus on the "Govern" and "Recover" functions.
- **CISA Cross-Sector Cybersecurity Performance Goals (CPGs):** Specifically for critical infrastructure entities.
- **National Cyber Strategy:** Alignment with the administration's pillars of defending critical infrastructure and disrupting threat actors.
## Common Pitfalls to Avoid
- **Over-reliance on EDR:** Do not assume EDR is an "invisible shield." Attackers are actively scripting the removal of these tools during the initial 120 minutes of an attack.
- **Delayed Reporting:** Waiting to disclose a breach can result in greater national security risk. Early engagement with the FBI or CISA can provide access to federal decryption resources or lead to the disruption of the attacker's infrastructure.
- **Ignoring "Non-Defense" Tools:** Even tools categorized for non-defense work (like AI or communications platforms) can be exploited for reconnaissance or phishing.
## Resources
- **CISA StopRansomware Portal:** [cisa[.]gov/stopransomware]
- **National Cyber Strategy Documentation:** [whitehouse[.]gov/briefing-room]
- **Mccrary Institute at Auburn University:** [mccraryinstitute[.]com]
- **CVE Program Database:** [cve[.]mitre[.]org]