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

February 10, 2023

Thailand’s SEC Sets Security Measure Requirements for Digital Asset Custody

Subscribe to Updates

On January 16, 2023, Thailand’s Securities and Exchange Commission (SEC) prescribed a set of security measures that digital asset business operators must implement if they provide custody of digital assets for their customers. The new security measures are prescribed in two notifications from the SEC and its office on digital asset wallet management systems and cryptographic key management systems, with the aim of safeguarding digital assets in custody against loss, fraud, and cybertheft. The notifications took immediate effect.

The new security measures and the management systems are summarized below.

Policy and guidelines for managing systems related to digital asset custody
Digital asset business operators must have a written risk management policy for all systems relating to digital asset custody, approved by their board of directors and made accessible to all employees. The policy must be reviewed or revised at least once annually, or promptly if any potential risks are identified. Specific procedures must be implemented, such as establishment of a compliance team and internal controls.

Management of systems for digital asset wallets and cryptographic keys
Digital asset business operators must have policies and procedures for managing all systems relating to digital asset custody. This includes properly designing, developing, and managing digital asset wallets in a safe and secure manner. The same requirement on policies and procedures applies to cryptographic key management as well.

Management of incidents that may affect systems related to digital asset custody
Digital asset business operators must have measures in place to manage incidents that may impact systems related to digital asset custody. The measures include designating a person responsible for incident management, testing and reviewing the incident management policy annually, reporting any incidents affecting digital asset custody to the designated responsible person and the SEC immediately, and conducting a digital forensic investigation with an independent specialist, if necessary.

If an incident affects the security of systems related to digital asset custody and has a significant impact on customers’ assets, the digital asset business operator must conduct a digital forensic investigation and report the investigation results to the SEC. The operator must also develop a plan to resolve the issues, along with measures to prevent reoccurrence. Documentary evidence of the incident management must be maintained for at least two years.

Implementation
Digital asset business operators that provided digital asset custody services to customers prior to January 16, 2023, are required to implement the new security measures specified in the notifications at the earliest opportunity, and no later than July 16, 2023 (i.e., six months from the effective date of the notification).

Related Professionals

Industries

Fintech

Technology

Practices

Banking and Finance

Capital Markets

Location

RELATED INSIGHTS​ 

August 4, 2026
Thailand’s Personal Data Protection Act B.E. 2562 (2019) (PDPA) could soon see some important changes, as a draft bill to amend the PDPA has been introduced in the House of Representatives. The draft amendment is currently in the public consultation phase, with comments accepted from July 16 to August 15, 2026. If enacted in its current form, the amendment would make three key changes: expanding the government exemption to cover anticorruption operations, introducing a statutory definition of “government agency,” and restructuring the lawful bases for personal data processing to align with international standards. Background The PDPA has encountered several enforcement challenges since its implementation, including three core problems identified by the bill’s sponsors: (1) the current exemptions for government agencies do not cover anticorruption and misconduct-prevention operations; (2) the PDPA lacks a clear statutory definition of “government agency,” causing legal uncertainty as to which entities are covered; and (3) the existing framework for lawful bases of data processing does not align with international standards—particularly the multiple-lawful-bases system in the EU’s General Data Protection Regulation (GDPR)—making compliance inflexible for both government and private sector entities. Expanded Government Exemption The current PDPA exempts government agencies performing duties related to national security (including fiscal security), public safety, anti-money laundering, forensic science, and cybersecurity. The proposed amendment adds “prevention and suppression of corruption and misconduct” to this list of exempted functions. This would allow anticorruption bodies—most notably the National Anti-Corruption Commission (NACC), which is identified as a directly affected party—to collect, use, and disclose personal data without being subject to PDPA requirements when carrying out their duties. New Statutory Definition of “Government Agency” Notably, while the current PDPA use the term “government agency” in several provisions, the term is not comprehensively defined, creating potential uncertainty as to its scope. The draft bill therefore
Read More
August 4, 2026
Tilleke & Gibbins has contributed the Vietnam chapter to Fintech 2027, a global guide published by Lexology Panoramic that provides comparative insights into the legal and regulatory frameworks governing fintech businesses across multiple jurisdictions. The Vietnam chapter offers a comprehensive overview of the country’s rapidly evolving fintech landscape, examining both the regulatory environment and practical considerations for businesses operating in or entering the Vietnamese market. Topics covered include: Fintech landscape and initiatives: General innovation climate; government and regulatory support Financial regulation: Regulatory bodies; regulated activities; consumer lending; secondary market loan trading; collective investment schemes; alternative investment funds; peer-to-peer and marketplace lending; crowdfunding; invoice trading; payment services; open banking; robo-advice; insurance products; credit references Cross-border regulation: Passporting; requirement for a local presence Sales and marketing: Restrictions on the promotion and marketing of financial products and services Cryptoassets and tokens: Distributed ledger technology; cryptoassets; token issuance Artificial intelligence: Regulatory framework governing AI systems and AI-enabled financial services Change of control: Notification and consent requirements for regulated businesses Financial crime: Anti-bribery and anti-money laundering procedures; regulatory guidance Data protection and cybersecurity: Data protection obligations; cybersecurity requirements applicable to fintech businesses Outsourcing and cloud computing: Outsourcing of material functions; use of cloud computing in the financial services industry Intellectual property rights: IP protection for software; employee- and contractor-created IP; joint ownership; trade secrets; branding; remedies for infringement Competition: Competition law issues affecting fintech businesses Tax: Incentives for innovation and investment; developments affecting tax and compliance obligations Immigration: Immigration options for recruiting skilled foreign personnel; special measures available through Vietnam’s international financial centers The chapter also examines a number of significant recent developments shaping Vietnam’s fintech sector, including the introduction of the country’s first comprehensive regulatory framework for cryptoassets, the adoption of a dedicated law on artificial intelligence, implementation of the banking regulatory sandbox,
Read More
August 3, 2026
On July 23, 2026, the Bank of Thailand (BOT) released for public comment its draft Notification on Digital Channel Security, which would significantly expand the scope and stringency of Thailand’s existing mobile banking security framework. If finalized in its current form, the draft notification would extend mandatory security requirements to credit card providers and credit providers, cover internet banking in addition to mobile applications, phase out SMS one-time passwords (OTPs) for transaction authentication, and introduce biometric verification requirements for high-value transactions. The public comment period is open through August 24, 2026. Background The BOT’s existing Mobile Banking Security Notification, issued in 2024, sets minimum security standards for financial institutions, specialized financial institutions (SFIs), and e-money providers, significantly reducing “money-draining app” fraud. However, fraudsters have since shifted to nonbank providers and internet banking channels, prompting the BOT to propose broader security requirements. Expanded Scope of Regulated Entities and Channels The existing Mobile Banking Security Notification covers only financial institutions, SFIs, and e-money providers offering mobile banking services. The draft expands coverage in two key areas: entities and channels. On the entity side, it adds credit card providers and credit providers that offer fund transfers to third parties at other financial service providers or that provide cash withdrawal services to individual retail customers. On the channel side, it broadens coverage to include internet banking in addition to mobile banking. Strengthened Customer Authentication The draft introduces enhanced authentication requirements in three areas: Service enrollment and device changes. Providers must implement rigorous identity verification, notify customers of enrollment results through out-of-band communication channels, and adopt risk-mitigation measures such as cooling-off periods and temporary transaction limits. Transaction-level authentication. Providers must use two-factor authentication for fund transfers, cardless ATM withdrawals, and transaction limit increases. Secure authentication factors. Key requirements include the following: “What-you-know” factors must
Read More
July 28, 2026
Data protection officers (DPOs) have become a fixture of Thailand’s privacy compliance landscape since the Personal Data Protection Act B.E. 2562 (2019) (PDPA) took full effect and the Office of the Personal Data Protection Committee (PDPC) began requiring certain organizations to appoint them. On July 7, 2026, the Office of the PDPC presented draft guidance on DPOs as part of a public consultation on a series of draft personal data protection manuals and recommendations. The draft offers the clearest indication yet of how the regulator expects the DPO role to work in practice, addressing recurring implementation issues under the PDPA—including when an organization must appoint a DPO, how the DPO should operate independently, how to manage conflicts of interest, and how data subjects and regulators should be able to contact the DPO. Because it remains in draft, organizations have an opportunity to weigh the practical implications now before the guidance is finalized. When a DPO Must Be Appointed The draft guidance clarifies the triggers for mandatory DPO appointment, including: Regular and systematic monitoring of personal data or systems on a large scale, such as tracking, analyzing, or predicting behavior, attitudes, or individual characteristics. Core activities involving large-scale processing of sensitive personal data, such as health data, biometric data, or criminal records. Certain foreign-organization representative arrangements. Public-sector coverage under relevant notifications identifying government entities that must appoint a DPO. Processing involving 100,000 or more data subjects may be considered large-scale. The guidance also contemplates voluntary DPO appointment for organizations that wish to raise their privacy governance standards, and such organizations should still comply with the standards applicable to DPOs under the law. Independence and Reporting Lines The draft guidance identifies lack of DPO independence as a core risk because an ineffective or constrained DPO may be unable to raise deficiencies
Read More