Cybersecurity Challenges in China

Navigating the Cybersecurity Landscape in China

China’s cybersecurity environment is shaped by state control, national security priorities and data sovereignty — and it demands more of a Western company than any other market you operate in. The regulatory framework is designed to protect critical information infrastructure and assert control over data, which means you cannot simply extend your global security posture into the Mainland and assume it holds. Understanding the local landscape is a core part of running IT for foreign companies in China & Hong Kong — and the rules keep moving, so staying compliant is a continuous discipline, not a one-off project.

Why local regulations matter

The laws that govern you are specific and enforceable. The headline trio:

Law	In force	What it demands
Cybersecurity Law (CSL)	June 2017	Network-security duties, the Multi-Level Protection Scheme (MLPS), data localisation for critical information infrastructure
Data Security Law (DSL)	September 2021	Grades all data by sensitivity to the state; restricts handing China-stored data to foreign courts or regulators
Personal Information Protection Law (PIPL)	November 2021	Consent-first processing, security measures, regulated cross-border transfers

Newer rules sit on top — the 2024 Cross-Border Data Flow Provisions relaxed parts of the export regime, and the 2025 Network Data Security Regulations consolidated the operational rulebook. Non-compliance carries real teeth: serious PIPL breaches can attract fines of up to RMB 50 million or 5% of annual revenue. Our China & Hong Kong data-laws guide covers the full stack in plain English.

Regulatory Challenges

Compliance with Chinese cybersecurity laws

The CSL mandates several ongoing obligations for businesses operating networks in China:

• Network security: you must secure your networks and report security breaches to the authorities.
• Personal information protection: consent before collecting personal data, and demonstrable safeguards around it.
• Critical information infrastructure (CII) protection: CII operators must undergo regular security assessments and store personal information and important data within China.

For the privacy-law side in detail, see our guide to navigating China’s PIPL.

Data localisation requirements

Localisation is strictest where the state cares most. Operators of critical information infrastructure must keep personal information and important data inside the Mainland, and exporting “important data” requires a government security assessment. Even outside those categories, moving personal data out of China is a regulated transfer with volume-based thresholds. Getting this wrong risks fines and restrictions on operations, so map where your data lives — and where it flows — before an auditor or regulator asks you to.

The Great Firewall and its implications

China’s internet filtering and surveillance system restricts access to many global websites and services, which affects security operations as much as productivity:

• Restricted access: global security tooling, update services and cloud consoles may be slow or unreachable from the Mainland.
• Increased cost: you may need local hosting, licensed cross-border connectivity or in-country infrastructure to keep operations reliable.
• Monitoring: traffic crossing the border is subject to inspection, which changes your assumptions about data in transit.

Design around the Firewall rather than against it — our post on the top technology challenges in China puts this in the wider operational context.

Operational Challenges

Protecting intellectual property

IP protection is one of the most pressing security concerns for Western companies in China, and it needs a layered approach: encryption of sensitive data, tight access controls, regular security audits, and employee training on data-handling practice. Pay particular attention to where design files, formulas and commercial data are stored and who can reach them — including via the informal channels (personal WeChat, unmanaged devices) that flourish in unmanaged China operations.

Managing cross-border data transfers

Chinese law treats data leaving the Mainland — including to Hong Kong — as a regulated cross-border transfer. Depending on the volume and sensitivity involved, you may be exempt, need a standard-contract filing, or need a full security assessment. The technical side matters too: transfers should run over secure, licensed connectivity, with the data flows documented. The data-laws guide explains the mechanisms and thresholds.

Risks of cyber espionage

Both state-sponsored and commercial espionage are realistic threats for foreign companies in China, particularly in manufacturing, technology and professional services. The countermeasures are unglamorous but effective: advanced threat detection, continuous monitoring, disciplined incident response, and minimising what sensitive data sits in-country in the first place. For many businesses this is best handled by a managed IT service that runs monitoring and response around the clock.

Does Chinese data law apply to data you send to Hong Kong?

Yes. Moving personal data from the Mainland to Hong Kong is still a cross-border transfer under PIPL — it is not an internal move, even within one company. Depending on volumes, you may need consent, a standard-contract filing or a security assessment, so treat Mainland-to-Hong-Kong flows with the same discipline as any other export.

What is MLPS and does it apply to your company?

The Multi-Level Protection Scheme, established under the Cybersecurity Law, grades information systems in China by the harm a compromise would cause, then mandates security controls and assessments to match. If you operate networks or systems in the Mainland it applies to you; many foreign-business systems land at tier 1 or 2, where the assessment burden is manageable with preparation. We explain the five levels, the filing process and the cloud question in detail in China’s MLPS 2.0 explained.

Strategic Approaches for Western Companies

Building a robust cybersecurity strategy

Your strategy has to address China’s specific regulatory and operational conditions, not just inherit the global template. Three foundations: a thorough risk assessment of your China-specific vulnerabilities; alignment with the CSL, DSL and PIPL obligations above; and stringent data protection covering both intellectual property and regulated cross-border flows.

Engaging with local expertise

Local knowledge is not optional. Partners on the ground understand the threat landscape, the regulators’ practical expectations and the compliance evidence you will be asked for — and they can respond to incidents in the right language and time zone. That is the gap PTS fills with IT and security support in Mainland China, delivered through a locally registered Shanghai entity.

Continuous monitoring and incident response

Staying secure in China is an operational habit: real-time monitoring to detect suspicious activity, a tested incident response plan your team can actually execute, and regular security audits to catch drift before a regulator or an attacker does.

This is the playbook in practice: when a Western manufacturer needed its fragmented China sites brought up to global standards, the work started with a full audit and ended with consistent security frameworks and ongoing managed support — see the China compliance case study. If you are facing the same challenge, our cybersecurity team and China operation work as one engagement.