Mapped to NIST 800-171 Requirement: 3.4.9
CMMC Assessment Objective: CM.L2-3.4.9[c]
What This Objective Means
While previous objectives (like CM.L2-3.4.9[a] and [b]) ask whether you’ve defined your software control strategy and are enforcing it, this part takes it a step further: you must prevent unauthorized software, firmware, or files from ever being loaded onto systems in the first place. This is a key aspect of maintaining information security policy compliance.
This includes:
• Blocking unauthorized installation of programs
• Preventing boot-level or firmware-level tampering
• Stopping unauthorized devices (USBs, external drives) from injecting code or data
This objective focuses on prevention at the point of execution or access, not just detection or policy.
Why It Matters
Allowing unapproved files or code into your systems:
• Creates backdoors for attackers
• Introduces compliance violations
• Increases malware and ransomware risk
• Enables insider threat actions without technical resistance
Security isn’t just about making a list of what you allow—it’s about making it impossible to load what you don’t. Adhering to a robust information security compliance policy ensures that such risks are minimized.
How to Implement It
Use technical enforcement mechanisms that stop unauthorized software and firmware from being introduced or executed to maintain it security policy compliance:
1. Application Control & Allowlisting
• Only permit software that matches defined publishers, paths, hashes, or signatures.
• Tools: Microsoft AppLocker, WDAC, JAMF, SentinelOne, CrowdStrike
2. Firmware Integrity Controls
• Implement Secure Boot and TPM to verify firmware authenticity on startup.
• Use BIOS/UEFI lockdown settings.
3. Endpoint Security Configurations
• Configure EDR or antivirus to block unapproved scripts, executables, or libraries.
4. Device Control
• Restrict use of USB ports and external devices unless explicitly authorized.
• Tools: GPO device control, EDR peripheral control, or dedicated device management tools.
5. Enforced Group Policies
• Block user install privileges.
• Prevent loading of executables from temporary paths or removable storage.
6. Monitor File Transfers and Mounts
• Enable restrictions for loading ISO, VHD, or script-based payloads from untrusted sources.
How Cuick Trac Helps
Cuick Trac supports this requirement by:
• Enforcing allowlisted software only within the secure enclave
• Disabling external device access where not explicitly approved
• Preventing firmware-level tampering through hardened boot controls
• Restricting software and file execution using pre-configured, locked-down endpoint settings
• Providing audit-ready logs that prove attempted unauthorized actions were blocked
Cuick Trac ensures that only trusted software and files ever make it into your CUI environment, aligning with security management standards and comprehensive information security compliance management.
Final CTA
Unapproved software doesn’t belong in your environment.
Cuick Trac makes sure it never gets in.
Schedule a Cuick Trac demo and see how we block threats before they become risks.