CSL (Cyber Security Law of China)
China's regulation for network security and data localization
NIST 800-171
U.S. standard for protecting CUI in nonfederal systems
Quick Verdict
CSL mandates data localization and network security for China operations, enforcing compliance via heavy fines. NIST 800-171 provides CUI protection requirements for US federal contractors through contractual SSPs and assessments. Companies adopt CSL for China market access; NIST for DoD contracts.
CSL (Cyber Security Law of China)
Cybersecurity Law of the People's Republic of China
Key Features
- Mandates data localization for CII and important data
- Requires network security safeguards and real-time monitoring
- Assigns cybersecurity responsibilities to senior executives
- Binds foreign enterprises serving Chinese users
- Imposes fines up to 5% of annual revenue
NIST 800-171
NIST SP 800-171 Revision 3
Key Features
- Protects CUI confidentiality in nonfederal systems
- Scoped CUI security domain isolation strategy
- SSP and POA&M documentation requirements
- 17 control families from SP 800-53
- FedRAMP Moderate cloud equivalence support
Detailed Analysis
A comprehensive look at the specific requirements, scope, and impact of each standard.
CSL (Cyber Security Law of China) Details
What It Is
The Cybersecurity Law of the People’s Republic of China (CSL), enacted on June 1, 2017, is a nationwide statutory regulation comprising 69 articles. It establishes a comprehensive framework governing network operators, service providers, and data processors within Chinese jurisdiction. Its primary purpose is securing information systems through mandatory technical safeguards, data protection, and governance, applying a baseline risk-based approach across sectors.
Key Components
CSL rests on three pillars: Network Security (safeguards, testing, monitoring); Data Localization & Personal Information Protection (storing CII and important data in Mainland China); Cybersecurity Governance (executive responsibilities, incident reporting). It targets network operators, CII operators, and entities handling important data, with compliance enforced via assessments and audits.
Why Organizations Use It
CSL is legally binding, with non-compliance risking fines up to 5% of annual revenue, disruptions, and reputational harm. It drives strategic advantages like consumer trust, operational efficiency via micro-services, and innovation through local R&D, positioning compliant firms for market leadership in China.
Implementation Overview
Adopt a phased GRC approach: pre-engagement, gap analysis, architectural redesign (e.g., local data centers, zero-trust), governance, and testing/certification. Applies to all organizations touching China—especially MNCs, cloud/SaaS providers—requiring MIIT-approved evaluations for CII and continuous monitoring.
NIST 800-171 Details
What It Is
NIST SP 800-171 (Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations) is a U.S. government security framework providing recommended requirements for safeguarding CUI confidentiality. It applies to nonfederal systems processing, storing, or transmitting CUI, tailored from NIST SP 800-53 Moderate baseline using a control-based, risk-commensurate approach.
Key Components
- 17 families in Rev. 3 (e.g., Access Control, Audit, Supply Chain Risk Management) with ~98 requirements.
- Built on FIPS 200 and SP 800-53; eliminates basic/derived split.
- Core artifacts: System Security Plan (SSP), Plan of Action and Milestones (POA&M).
- Compliance via self-assessment or third-party (e.g., CMMC Level 2), using SP 800-171A procedures.
Why Organizations Use It
- Mandatory for federal contractors via DFARS 252.204-7012.
- Reduces breach risk, ensures contract eligibility.
- Builds trust, enables FedRAMP cloud inheritance.
Implementation Overview
- Phased: scoping CUI enclave, gap analysis, controls, evidence collection.
- Applies to contractors handling CUI; all sizes, DoD-focused.
- Audits via examine/interview/test; ongoing monitoring essential. (178 words)
Key Differences
| Aspect | CSL (Cyber Security Law of China) | NIST 800-171 |
|---|---|---|
| Scope | Network security, data localization, governance for China operations | CUI confidentiality protection in nonfederal systems |
| Industry | All network operators serving Chinese users, China-focused | US federal contractors, defense supply chain, global applicability |
| Nature | Mandatory national law with fines and shutdowns | Contractual security requirements, recommended baseline |
| Testing | Periodic security testing, government assessments for CII | SSP/POA&M, self/third-party assessments per 800-171A |
| Penalties | Fines up to 5% revenue, business suspension | Contract ineligibility, no direct fines |
Scope
Industry
Nature
Testing
Penalties
Frequently Asked Questions
Common questions about CSL (Cyber Security Law of China) and NIST 800-171
CSL (Cyber Security Law of China) FAQ
NIST 800-171 FAQ
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