You are using an outdated browser and your browsing experience will not be optimal. Please update to the latest version of Microsoft Edge, Google Chrome or Mozilla Firefox. Install Microsoft Edge

September 8, 2022

What Do Vietnam’s New Data Localization Requirements Mean for Domestic Enterprises?

While much attention has been paid to the data localization requirements for foreign enterprises under Vietnam’s 2018 Cybersecurity Law (“CSL”) and the recently issued Decree 53 guiding its implementation, the corresponding requirements for domestic enterprises are often overlooked, despite being potentially more troublesome.

Under Decree 53, “domestic enterprises” are defined to mean enterprises established or registered for establishment under Vietnamese law and having their head offices in Vietnam (Article 2.11), so this designation includes not only Vietnamese companies, but foreign-invested enterprises as well.

Background

Before analyzing the stipulations in Articles 26 and 27 of Decree 53 further guiding the data localization/storage requirements, it is worth restating the very problematic Article 26.3 of the CSL, which reads:

Domestic and foreign enterprises providing services on telecommunication networks or the internet or value-added services in cyberspace in Vietnam with activities of collecting, exploiting, analyzing, and/or* processing personal information data, data on the relationships of service users, or data generated by service users in Vietnam must store such data in Vietnam for the period prescribed by the government. Foreign enterprises mentioned in this clause must open branches or representative offices in Vietnam.

[* Note: The Vietnamese text simply uses a comma here, without specifying whether this should be “and” or “or,” leading to additional problems in interpretation.]

Because of this very broad and ambiguous wording, Article 26.3 of the CSL required further guidance from the government and remained unenforced for more than three years after the CSL took effect on January 1, 2019. Decree 53 guiding the implementation of the CSL was finally issued on August 15, 2022, and provides additional clarity on this matter. But does Decree 53 provide sufficient guidelines for implementation with regard to domestic enterprises?

Scope of Application

With regard to foreign enterprises, although there remains some ambiguity, Decree 53 provides clearer guidelines by specifying 10 types of services (the “regulated services”) that are subject to the data localization requirements, as well as the triggering conditions that lead to foreign enterprises being required to store regulated data and establish a branch or representative office in Vietnam. Decree 53 even covers cases where a foreign enterprise is unable to comply with a decision of the Ministry of Public Security (MPS) due to force majeure reasons. Please see our previous article for a detailed discussion.

With regard to domestic enterprises, Article 26.2 of Decree 53 simply sets out that “domestic enterprises must store the [regulated data as defined in Article 26.1] in Vietnam,” raising concerns as to what exactly is the true intention of the drafter.

This intention could be interpreted in several ways:

  1. The drafter wishes to cover all domestic enterprises (i.e., every company incorporated in and operating in Vietnam, regardless of industry or sector);
  2. The drafter wishes to cover all domestic enterprises “providing services on telecommunication networks or the internet or value-added services in cyberspace in Vietnam collecting, exploiting, analyzing, and/or processing personal information data, data on the relationships of service users, or data generated by service users in Vietnam,” as provided by Article 26.3 of the CSL, without any triggering conditions; or
  3. The drafter additionally wants to limit the services of domestic enterprises to the 10 regulated service types for foreign enterprises, with the same triggering conditions, to afford equal treatment between domestic enterprises and foreign enterprises. (Obviously, the scope of application in the first two interpretations would lead to differential treatment.)

Interpretation (1) is the broadest coverage and would significantly widen the scope of the CSL. In theory, according to the hierarchy of law and sub-laws in Vietnam, this is not legal. In practice, we have seen the authorities enforce stricter requirements found in subordinate legislation, instead of the broad requirements under the primary law. However, in our opinion, this intention is the least likely.

Interpretation (2) is the strictly “legal” interpretation, and the most likely intention of the drafter because Decree 53 was issued to implement certain articles of the CSL – Article 26.3 in this case. However, if interpretation (2) is the true intention of the drafter, the scope of coverage remains extremely broad and unclear, and may need further clarification from the MPS.

If the intention of the drafter is to treat domestic enterprises and foreign enterprises equally – i.e., interpretation (3) – then the drafting technique is flawed, because by not specifying the 10 regulated types of services and the triggering conditions for domestic enterprises, Article 26 of Decree 53 is not drafted in a way to support this intention.

Without further clarification from the MPS, interpretation (2) is the most likely intention; however, it could be argued that this clause thus covers all types of online services for domestic enterprises that collect, use, analyze, and/or process regulated data. Why would this be so?

Article 26.3 of the CSL specifies three types of services – “services on telecommunication networks”; “services on the internet”; and “value-added services in cyberspace” – without further explanation or definition, leaving it up to Decree 53 to define these services:

  • “Services on telecommunication networks means telecommunication services and telecommunication application services as prescribed by law” (Article 2.6 of Decree 53). Telecom law defines telecommunication application services to mean “services using telecom transmission lines or telecom networks to provide application services in the sectors of information technology, radio, television, commerce, finance, culture, information, medical health, education, and other sectors.” The notable inclusion of “other sectors” could be interpreted as a “catch-all” term, leading to the possibility that it could cover all sectors/services provided on telecom/internet networks. (The internet network is a type of telecom network.)
  • “Services on the internet means internet services and services providing content on the internet as prescribed by law” (Article 2.7 of Decree 53). The concept of “services providing content on the internet” is not defined and is very broad. Arguably, without definition, such services could be interpreted to include online news, online consulting, online advertising, video on demand, OTT television services, online games, social networks, etc., leading to an extremely broad scope of application.
  • Value-added services in cyberspace means value-added telecommunication services as prescribed by law” (Article 2.8 of Decree 53).

Therefore, with regard to domestic enterprises, it could be said that if there is no further guidance or clarification from the MPS, all online service providers which collect, use, analyze, and/or process regulated data are required to store the regulated data in Vietnam.

Form of Data Storage

Under Article 26.5 of Decree 53, the form of data storage in Vietnam is to be decided by the enterprises. However, what is sufficient to be considered as “storing data in Vietnam” is still very ambiguous.

As technology has evolved, cloud storage has become a very popular method for both domestic and foreign enterprises to store data. Is it sufficient to store data “in the cloud” if the cloud infrastructure is not located in Vietnam but is accessible via a computer in Vietnam? Or does the data need to be stored in a computer/server or cloud infrastructure that is physically located in Vietnam? Does the original regulated data have to be stored in Vietnam, or it sufficient to just store a copy? These practical concerns need further clarification from the MPS.

Duration of Data Storage

The duration for storage of regulated data of domestic enterprises is also unclear. Article 27.1 of Decree 53 stipulates that the data storage period specified in Article 26 of the decree starts from the time the enterprise receives a data storage request and lasts until the end of the request. The minimum storage period is 24 months.

It is unclear whether this data storage period is applicable to both domestic and foreign enterprises. While for foreign enterprises, Decree 53 clearly specifies the authority’s request to store data in Vietnam as a triggering condition, the decree is silent as to any conditions under which the authority will request domestic enterprises to store regulated data. As analyzed above, there might be no such condition to trigger a request for domestic enterprises. This means that, technically, Article 27.1 should only be applicable to foreign enterprises because it requires the enterprise to receive a data storage request from the authority. Therefore, it could be argued that the specified data storage duration is also only applicable to foreign enterprises, and the decree is silent regarding the data storage period for domestic enterprises. Accordingly, it is also unclear whether domestic enterprises have the obligation to continue retaining regulated data after their service users cease the use of their services.

Grace Period for Implementation

Decree 53 is silent on the grace period for domestic enterprises to store data in Vietnam. This could be interpreted to mean that unless there is further guidance from the MPS, domestic enterprises must comply with this requirement from the day Decree 53 takes effect, i.e., October 1, 2022.

Meanwhile, foreign enterprises only need to implement the data localization requirements when the triggering conditions are fulfilled and the MPS has issued a decision requesting them to do so. They also have a grace period of 12 months from the date of the decision to store data in Vietnam. Therefore, compared with foreign enterprises, domestic enterprises would need to be more proactive and act more quickly in storing regulated data in Vietnam.

How Should Domestic Enterprises Move Forward?

Although there has been a long wait for the promulgation of a decree guiding the implementation of the CSL, Decree 53 as issued still poses various ambiguities, uncertainties, and concerns that could prevent it from being implemented effectively. The question put forward is whether the MPS will issue a circular or other official clarification for further guidance of the implementation of Decree 53, especially clarification on the requirements applicable to domestic enterprises.

If there is no further clarification or guidance from the MPS, the strict legal interpretation of Decree 53 would be that all domestic enterprises “providing services on telecommunication networks or the internet or value-added services in cyberspace in Vietnam collecting, exploiting, analyzing, and/or processing personal information data, data on the relationships of service users, or data generated by service users in Vietnam” must store this regulated data in Vietnam. This means that all domestic online service providers which collect, use, analyze, or process regulated data should prepare themselves to comply with this requirement, starting from October 1, 2022.

In addition, if there is no further guidance, domestic enterprises would be well advised to store physically in Vietnam all regulated data they collect, use, analyze, or process. For example, they may store the regulated data in a file which is stored on a computer (their existing system) located in Vietnam, rather than in cloud storage that might be accessible via a computer in Vietnam, but hosted in another country.

RELATED INSIGHTS​ 

July 24, 2025
Vietnam’s Ministry of Public Security recently released a draft version of the 2025 Cybersecurity Law, which is intended to replace both the existing 2018 Cybersecurity Law and the 2015 Law on Network Information Security (LNIS). This consolidation reflects a broader effort by the Vietnamese government to streamline and centralize the legal framework governing cybersecurity, data protection, and information security to be under the sole authority of the Ministry of Public Security, moving away from the previous sharing of responsibility with the former Ministry of Information and Communications (which ceased operations earlier this year and merged with the Ministry of Science and Technology). This shift aims to eliminate overlaps and improve enforcement efficiency. The draft law is built upon the foundation of principles and provisions of both the 2018 Cybersecurity Law and the 2015 LNIS, while also introducing a wide range of amendments and new regulations. By merging the two laws, the government seeks to reduce legal fragmentation and ensure consistency in definitions, obligations, and enforcement mechanisms across related domains like data protection, IT system classification, and cybercrime prevention. The newly introduced amendments include enhanced obligations for service providers, stricter controls on information transmission, classification of IT systems, designation and protection of nationally important information systems, and sector-specific violations and compliance requirements. Highlights of the draft law are discussed below. Definition and Obligations of Service Providers The draft law clearly defines and significantly broadens the scope of entities considered “service providers” under its jurisdiction. This now includes businesses and individuals offering products or services in cyberspace, including both infrastructure and content online services, such as: Internet service providers (ISPs) and providers of telecommunications, hosting, servers, domain names, VPNs, proxy services, and cloud computing; Providers of social networks, websites, and online gaming; Financial institutions, banks, foreign bank branches in Vietnam, e-wallet
July 23, 2025
On July 4, 2025, Thailand’s Electronic Transactions Development Agency (ETDA) issued two significant notifications that introduce new compliance requirements for ride-hailing platforms operating in the country. The notifications formally designate these platforms as high-impact digital services under section 18(3) of the Royal Decree on Digital Platform Service Businesses and impose a comprehensive set of additional operational obligations. These measures are designed to address regulatory gaps and enhance oversight of digital platforms providing public passenger vehicle or motorcycle ride-hailing services. First, the Notification on the Designation of Ride-Hailing Platforms under section 18(3) formally designates all ride-hailing platforms that have notified the ETDA of their operations as high-impact digital platform services under section 18(3) of the royal decree. Unlike high-risk marketplace platforms, which are named individually, any ride-hailing platform that has notified the ETDA of its operations is automatically subject to these new requirements. Next, the Notification on Additional Obligations for Ride-Hailing Platforms imposes further obligations on ride-hailing platforms, supplementing the general requirements under section 21 of the royal decree. These notifications will come into force 90 days from their publication in the Government Gazette. New Compliance Obligations The new regulatory framework introduces a range of operational, technical, and reporting requirements for ride-hailing platforms, particularly concerning the issues described below. Vehicle and Driver Compliance Operators must: Ensure that all vehicles used on the platform are registered as public vehicles in accordance with Department of Land Transport requirements Verify all drivers hold valid public driving licenses Collect service fees in compliance with applicable fare regulations under the Vehicle Law Digital Platform Features and User Verification Operators must implement robust digital platform features for both drivers and riders, including: Comprehensive identity verification and confirmation processes for drivers and riders, utilizing both face-to-face and non-face-to-face methods, including biometric and digital ID checks Real-time GPS
July 17, 2025
On July 9, 2025, Thailand issued a notification that introduces comprehensive operational requirements for digital platform service providers operating as goods marketplaces, effective December 31, 2025 (i.e., 180 days after its publication in the Government Gazette). The regulation’s official name is Notification of the Electronic Transactions Committee Re: Other Actions for Digital Platform Service Operators in the Category of Marketplace for Goods with Specific Characteristics under Section 18(2) of the Royal Decree on the Operation of Digital Platform Service Businesses that are Subject to Prior Notification B.E. 2565 (2022), B.E. 2568 (2025). Scope of Application The notification applies exclusively to goods marketplace operators formally designated by the Electronic Transactions Development Agency (ETDA), which on the same day designated 19 platforms that had previously notified the ETDA of their operations. The goods requiring enhanced oversight by these operators are limited to those regulated by the Thai Food and Drug Administration (FDA) and the Thai Industrial Standards Institute (TISI). Development from Earlier Draft An earlier draft of the notification had included a requirement for offshore platforms to establish a local entity, but this requirement was removed from the final notification. Key Obligations Despite the removal of the local entity requirement, the notification imposes a range of additional obligations on designated goods marketplace operators: Transparency. Operators must implement robust transparency measures, including clear, accessible, and understandable disclosures to users in Thai. These disclosures must cover all relevant terms and conditions, comprehensive product information, and complaint management procedures. Operators must also submit an annual compliance report to the ETDA within 60 days after the end of their accounting period, including statistics on regulated goods. Business user registration and identity verification. Before permitting the sale or advertisement of regulated goods, operators must collect and verify business user information, including contact details, identification documents, registration
July 15, 2025
Thailand has established new safe harbor rules that require social media platforms to remove specified content within 24 hours of government notification. On July 5, 2025, the Notification of the Electronic Transactions Commission on Measures to Prevent Technological Crimes for Social Media Service Providers was issued and took effect. This followed a hearing in May 2025 where only a select group of social media and online communication platform operators were invited to attend and comment on draft rules that could exempt social media platform operators from joint liability under the amended Emergency Decree on Measures for the Prevention and Suppression of Technological Crimes in cases involving victims of technological crimes. Safe Harbor Rules The notification stipulates procedures that must be followed in order to receive the protection of the safe harbor rules. Upon being notified by the Division of Prevention and Suppression of Cybercrime, Office of the Permanent Secretary of the Ministry of Digital Economy and Society (MDES) of the presence of false or misleading information that may lead to the commission of a technological crime, social media service providers must immediately take down the specified content, with a maximum allowable turnaround time of 24 hours from the time of receiving the notification. Social media service providers are required to promptly report the outcome of each takedown to the MDES Division of Prevention and Suppression. This shift in Thailand’s regulatory approach to social media content moderation establishes clear government oversight mechanisms while providing platforms with liability protection for compliance. As the new rules took immediate effect, social media platforms need to ensure that they have adequate systems and processes in place to comply with the requirements.