Implications for Singapore’s DeFi Ecosystem

An In-Depth Analysis of the January 2026 Security Breach

Executive Summary

On January 25, 2026, the decentralized finance (DeFi) ecosystem experienced a significant security breach when hackers exploited a vulnerability in SwapNet, a protocol integrated with Matcha Meta, stealing approximately $16.8 million in cryptocurrency. This incident arrives at a critical juncture for Singapore, which has recently claimed the top position globally in crypto adoption rankings while simultaneously tightening its regulatory framework for digital asset service providers.

For Singapore’s crypto community—comprising over 11% of the population holding digital assets—this breach serves as both a cautionary tale and a validation of the Monetary Authority of Singapore’s (MAS) increasingly stringent regulatory approach. As the nation positions itself as a global leader in institutional DeFi while implementing some of the world’s most comprehensive crypto regulations, the Matcha Meta hack highlights the delicate balance between innovation and security that defines Singapore’s digital asset landscape in 2026.

1. The Matcha Meta Security Breach: What Happened

1.1 Timeline of Events

The attack unfolded rapidly on January 25, 2026, exploiting a critical vulnerability in the SwapNet aggregator protocol:

  • 5:10 PM GMT: The breach began, targeting users who had disabled Matcha Meta’s One-Time Approval feature
  • Attack Vector: Hackers exploited an arbitrary call vulnerability in SwapNet’s smart contract, allowing them to drain open token allowances
  • Primary Target: Users who had granted unlimited approvals directly to SwapNet’s router contract rather than using Matcha’s protected One-Time Approval system
  • 9:47 PM GMT: Matcha Meta publicly confirmed the attack via social media, attributing the incident to SwapNet
  • Funds Movement: On the Base network, attackers converted approximately 10.5 million USDC into roughly 3,655 ETH and began bridging funds to Ethereum

1.2 Technical Analysis of the Vulnerability

The breach exploited a fundamental weakness in how many DeFi protocols handle token approvals. When users interact with decentralized exchanges, they must first grant permission for the exchange’s smart contract to spend their tokens. While this is a necessary part of DeFi’s architecture, it creates persistent security risks when approvals are not properly limited.

DeFi security researcher Weilin Li from University College London characterized the incident as “the largest approval attack (excluding phishing) I’ve ever seen.” The root cause was an arbitrary call controlled by the attacker that drained open allowances to SwapNet’s contract. This represents a critical smart contract vulnerability where insufficient access controls allowed malicious actors to exploit legitimate user permissions.

Crucially, Matcha Meta’s own AllowanceHolder and Settler contracts were not compromised. The vulnerability existed specifically in SwapNet, one of multiple aggregator protocols integrated with Matcha Meta’s meta-aggregator platform. This demonstrates both the interconnected nature of DeFi risks and the importance of security in third-party integrations.

1.3 User Impact and Response

The attack affected only a subset of Matcha Meta users—specifically those who had:

  • Disabled the platform’s One-Time Approval safety feature
  • Granted ongoing token allowances directly to individual aggregators like SwapNet
  • Previously routed trades through SwapNet’s compromised router contract

Matcha Meta immediately issued emergency guidance urging all users to revoke approvals to SwapNet and other individual aggregators as a precautionary measure. The protocol has since removed the option for users to set direct approvals to third-party aggregators, making One-Time Approvals the default and mandatory approach going forward.

This incident adds to a concerning trend in DeFi security. According to blockchain security firm SlowMist, hackers stole over $649 million through code exploits in 2025, with smart contract vulnerabilities accounting for just over 30% of all crypto exploits—making them the leading cause of losses in the digital asset ecosystem.

2. Singapore’s Unique Position in the Global Crypto Landscape

2.1 Leading Global Crypto Adoption

The Matcha Meta breach occurs against the backdrop of Singapore’s remarkable ascent to global crypto leadership. According to the 2025 World Crypto Rankings report by Bybit and DL Research, which evaluated 79 countries across 28 metrics and 92 data points, Singapore scored 7.5 out of 10, surpassing the United States (second place), Lithuania, Switzerland, and the UAE.

This top ranking reflects several distinctive characteristics of Singapore’s crypto ecosystem:

  • User Penetration: Over 11% of Singapore’s 5.7 million population holds cryptocurrency, earning a perfect 1.00 score for user adoption
  • Mainstream Integration: Digital assets are increasingly part of daily financial life, not just speculative investments
  • Developer Activity: Active local blockchain development community creating innovative projects
  • Institutional Participation: Strong engagement from traditional financial institutions in tokenization and DeFi
  • Regulatory Clarity: MAS has established comprehensive frameworks that provide certainty while enabling innovation

A September 2025 report by SingSaver and Coinbase titled “Pulse of Crypto: Singapore 2025” provides additional insight into local adoption patterns. The study found that cryptocurrency has moved from niche interest to mainstream financial asset among Singaporean retail investors, particularly younger, digitally savvy generations. However, adoption is measured: 74% of investors keep crypto holdings under 10% of their total portfolio, with typical allocation between 6-12%, demonstrating prudent risk management despite strong interest.

2.2 The Regulatory Evolution: From Friendly to Stringent

Singapore’s crypto regulatory landscape has undergone a dramatic transformation, shifting from an innovation-friendly, light-touch approach to one of the world’s most comprehensive and stringent oversight regimes. This evolution reached a critical milestone with the June 30, 2025, deadline under the Financial Services and Markets Act (FSMA).

Key regulatory developments include:

  • Payment Services Act (2019): Established initial framework for Digital Payment Token (DPT) service providers, requiring licensing and AML/CFT compliance
  • FSMA Implementation (June 30, 2025): Mandated licensing for all Singapore-incorporated Digital Token Service Providers (DTSPs), even those serving only overseas clients
  • Licensing Restrictions: MAS stated it would grant licenses only in “extremely limited circumstances” due to heightened money laundering and terrorism financing risks
  • Penalties: Non-compliance carries fines up to SGD 250,000 (approximately USD 200,000) and imprisonment for up to three years
  • Retail Protections: Banned credit card purchases of crypto, prohibited promotional incentives, and required investor risk tests

Particularly relevant to the Matcha Meta incident is MAS’s approach to DeFi. While decentralized protocols themselves cannot be easily regulated, MAS is targeting the interfaces and entities that connect users to DeFi. Any web-based platform, application, or crypto service provider operating from Singapore that facilitates access to tokens may be treated as a regulated business requiring licensing and compliance with AML/CFT standards.

2.3 Travel Rule and Enhanced Compliance

Singapore has implemented the Financial Action Task Force (FATF) Travel Rule for cryptocurrency transactions, requiring involved providers to collect and transmit identifying information about senders and recipients for transactions above SGD 1,500 (approximately USD 1,100). This extends compliance obligations even to decentralized transfers, effectively creating accountability layers throughout the ecosystem.

For platforms like Matcha Meta that serve Singaporean users, these regulations create both operational challenges and market opportunities. Compliance costs are significant, but regulatory clarity reduces uncertainty and may ultimately protect users from incidents like the SwapNet exploit—assuming proper oversight extends to integrated third-party protocols.

3. Direct Impact on Singapore’s Crypto Users

3.1 Exposure Assessment

While specific data on affected Singaporean users has not been publicly disclosed, we can estimate potential exposure based on known factors:

Singapore’s crypto demographic profile suggests significant potential exposure. With 11% of the population holding cryptocurrency, approximately 627,000 Singaporeans have digital asset holdings. The SingSaver/Coinbase report indicates that the average Singapore crypto investor owns three different cryptocurrencies and maintains portfolio allocations between 6-12% in digital assets, suggesting relatively sophisticated users who might engage with DeFi platforms like Matcha Meta.

Matcha Meta serves as a meta-aggregator that routes trades through multiple decentralized exchanges and aggregators to find optimal prices. Given Singapore’s position as the world’s leading crypto adopter with strong DeFi engagement (ranking 13th globally in DeFi value received according to Chainalysis), Singaporean users likely represent a meaningful portion of Matcha Meta’s user base.

However, several factors may have limited Singaporean exposure:

  • Conservative Approach: Singapore’s relatively measured adoption (most investors keep crypto under 10% of portfolio) suggests users may be more cautious about security practices
  • One-Time Approval Usage: Security-conscious Singaporean users may have been more likely to maintain Matcha Meta’s One-Time Approval feature, which protected against this specific attack vector
  • Regulatory Environment: MAS’s strict oversight may have encouraged more conservative security practices among Singapore-based users

3.2 Market Sentiment and User Confidence

The psychological impact on Singapore’s crypto community may prove more significant than direct financial losses. The SingSaver/Coinbase report identified market volatility as the most significant barrier to broader crypto adoption, cited by 68% of respondents. The Matcha Meta breach adds security concerns to volatility worries, potentially reinforcing hesitation among potential new users.

However, the incident may also validate MAS’s regulatory approach. Two-thirds of survey respondents ranked security and regulation above low trading fees as priorities, suggesting Singaporean crypto users value oversight and consumer protection. The breach demonstrates exactly the kinds of risks that stringent regulation aims to prevent or mitigate.

For institutional investors, the incident underscores the importance of Project Guardian, MAS’s initiative to develop institutional DeFi infrastructure with global financial giants including Standard Chartered, Citi, HSBC, UBS, and Moody’s. These institutions are working on regulated tokenization frameworks that could provide institutional-grade security for DeFi interactions, potentially creating a more resilient ecosystem less vulnerable to exploits like the SwapNet vulnerability.

3.3 Educational Implications

The breach highlights critical gaps in user education around DeFi security best practices. Many users may not fully understand the implications of granting unlimited token approvals or the differences between various approval mechanisms. The SingSaver/Coinbase report noted that social media is the leading source of crypto knowledge for 62% of respondents, raising concerns about the quality and accuracy of security information reaching users.

This creates both challenges and opportunities. MAS and industry participants have an opening to develop more robust educational initiatives that help users understand smart contract risks, approval mechanisms, and security best practices. Given Singapore’s tech-savvy population and high adoption rates, effective education could significantly enhance ecosystem resilience.

4. Broader Implications for Singapore’s DeFi Ecosystem

4.1 Regulatory Validation and Evolution

The Matcha Meta incident arrives at a pivotal moment in Singapore’s regulatory evolution. Some observers have characterized MAS’s recent tightening as potentially stifling innovation or driving businesses away. However, the breach provides evidence supporting regulatory caution, particularly regarding DeFi platforms and third-party integrations.

MAS’s approach to DeFi regulation—targeting interfaces and entities that connect users to protocols rather than attempting to regulate decentralized code itself—appears validated by this incident. SwapNet functioned as exactly the kind of intermediary service that MAS seeks to bring under regulatory oversight. Had SwapNet been required to meet MAS’s operational resilience and cybersecurity standards, the vulnerability might have been identified and addressed before exploitation.

The incident may accelerate regulatory developments in several areas:

  • Third-Party Integration Standards: Enhanced requirements for platforms to vet and continuously monitor integrated protocols
  • Smart Contract Auditing: Mandatory independent security audits for protocols serving Singapore users
  • User Protection Mechanisms: Required default security features like One-Time Approvals rather than optional settings
  • Incident Response Protocols: Standardized procedures for breach notification and user protection

4.2 Competitive Positioning in the Asia-Pacific Region

Singapore faces increasing competition from other Asia-Pacific jurisdictions positioning themselves as crypto hubs. Hong Kong is particularly aggressive, with plans to issue its first batch of stablecoin licenses in early 2026 and actively courting crypto businesses with more permissive approaches. The United Arab Emirates, Japan, and South Korea are also advancing their crypto frameworks.

The Matcha Meta breach could influence this competitive dynamic in complex ways. On one hand, it demonstrates the risks inherent in insufficiently regulated DeFi, potentially validating Singapore’s cautious approach and attracting risk-averse institutional capital. Major financial institutions may prefer Singapore’s stringent but clear regulatory framework over more permissive jurisdictions with less robust oversight.

On the other hand, some innovative DeFi projects may find Singapore’s regulatory requirements too burdensome and migrate to more accommodating jurisdictions. The FSMA’s strict licensing regime for DTSPs has already prompted some firms to cease Singapore operations or relocate. If security incidents like the Matcha Meta breach become common elsewhere but remain rare in Singapore, the city-state’s value proposition strengthens. Conversely, if well-regulated environments prove no safer than lightly regulated ones, Singapore’s stringent approach may seem unnecessarily restrictive.

4.3 Institutional DeFi and Tokenization

Singapore has positioned itself as a leader in institutional DeFi and real-world asset (RWA) tokenization through initiatives like Project Guardian. The global RWA tokenization market exploded by 63% to reach $2.57 billion according to recent data, with Singapore at the forefront. On-chain salary payments now account for 9.6% of all payroll transactions globally, with over 90% settled using stablecoins.

The Matcha Meta incident creates a critical inflection point for institutional DeFi adoption. While retail DeFi platforms like Matcha Meta grapple with security vulnerabilities and user protection challenges, institutional frameworks demand far higher security standards. Major financial institutions participating in Project Guardian are developing regulated DeFi infrastructure with institutional-grade safeguards, potentially creating a parallel ecosystem less vulnerable to the kinds of exploits affecting retail platforms.

This could lead to market bifurcation: regulated, institutional DeFi operating under MAS oversight with robust security but limited innovation speed; and permissionless, retail DeFi offering greater flexibility but higher risks. Singapore’s regulatory approach may effectively accelerate this bifurcation by creating clear standards that institutional players can meet while making retail DeFi platforms either upgrade their security or serve markets outside Singapore.

4.4 Stablecoin Development and Infrastructure

Singapore recently launched the first stablecoin pegged to the Singapore Dollar (XSGD by StraitsX), positioning itself as a leader in the emerging national stablecoin sector. The city-state is also developing comprehensive stablecoin regulatory frameworks under MAS guidance, mandating high-quality reserve backing, redemption rights, and operational resilience.

The Matcha Meta incident—where attackers converted USDC to ETH—highlights the importance of secure stablecoin infrastructure. As Singapore builds its stablecoin ecosystem, ensuring that these assets can be safely used in DeFi contexts becomes paramount. This may drive development of regulated DeFi protocols specifically designed for stablecoin interactions, creating safer on-ramps and use cases for SGD-pegged digital assets.

5. Risk Management and User Protection Strategies

5.1 Technical Safeguards for Users

The Matcha Meta breach provides clear lessons for DeFi users. Following these best practices can significantly reduce exposure to similar attacks:

Token Approval Management:

  • Always use One-Time Approvals or equivalent features when available
  • Regularly audit and revoke unnecessary token approvals using tools like Revoke.cash or similar services
  • Never grant unlimited approvals unless absolutely necessary, and revoke them immediately after use
  • Understand that approvals persist after transactions complete—they’re not automatically revoked

Platform Selection:

  • Prioritize platforms with strong security track records and recent audits
  • Verify that integrated protocols have been independently audited by reputable firms
  • Check if platforms have insurance or user protection mechanisms
  • Consider using MAS-licensed platforms operating under Singaporean oversight

Wallet Security:

  • Use separate wallets for DeFi interactions versus long-term holdings
  • Keep large holdings in cold storage or hardware wallets
  • Limit the amount of funds in wallets connected to DeFi protocols

5.2 Industry-Level Improvements

The incident highlights several areas where the DeFi industry must improve to protect users and maintain trust:

Enhanced Security Standards:

  • Mandatory independent security audits for all protocols handling user funds
  • Continuous monitoring and bug bounty programs to identify vulnerabilities
  • Real-time risk assessment tools that alert users to potentially dangerous approvals
  • Implementation of time-locked or rate-limited operations for high-value transactions

User Interface Improvements:

  • Clear, prominent warnings about approval risks before users grant permissions
  • Simplified approval management dashboards showing all active permissions
  • Automatic suggestion to revoke approvals after transactions complete
  • Integration of approval scanning tools directly into wallet interfaces

5.3 Regulatory Frameworks and Oversight

For Singapore specifically, the incident may inform regulatory evolution in several ways:

  • Integration Responsibility: Platforms may become liable for vulnerabilities in third-party protocols they integrate, creating incentives for thorough security vetting
  • Security Standards: MAS could establish minimum cybersecurity and operational resilience requirements specifically for DeFi interfaces
  • Disclosure Requirements: Mandatory clear disclosure of security risks and approval mechanisms
  • Insurance Mechanisms: Potential requirements for platforms to maintain insurance or recovery funds to compensate users for certain types of losses

6. Looking Forward: Singapore’s DeFi Future

6.1 Short-Term Outlook (2026)

In the immediate aftermath of the Matcha Meta breach, Singapore’s crypto ecosystem will likely experience several developments:

  • Increased Scrutiny: MAS will likely conduct enhanced oversight of DeFi platforms serving Singapore users, potentially resulting in additional guidance or regulatory clarifications
  • Security Upgrades: Platforms operating in Singapore will prioritize security enhancements, particularly around approval mechanisms and third-party integrations
  • User Education Initiatives: Industry groups and regulators will likely launch enhanced educational programs focused on DeFi security best practices
  • Market Consolidation: Smaller, less secure platforms may struggle to meet heightened expectations, potentially accelerating consolidation toward more established, well-capitalized players

The incident is unlikely to derail Singapore’s overall crypto trajectory. With over 11% population adoption and strong institutional involvement, the ecosystem has sufficient momentum to absorb this setback. However, growth may slow temporarily as users and platforms reassess security practices.

6.2 Medium-Term Evolution (2026-2028)

Over the next few years, several trends will shape Singapore’s position in global DeFi:

Regulatory Maturation:

  • Comprehensive stablecoin legislation expected to be finalized, creating clear frameworks for SGD-pegged and foreign stablecoins
  • Expanded cross-border tokenization infrastructure enabling seamless movement of tokenized assets
  • Potential development of specialized DeFi licensing categories balancing innovation with oversight

Institutional DeFi Growth:

  • Project Guardian likely to produce commercial implementations of regulated DeFi infrastructure
  • Major financial institutions launching tokenized products and services for institutional clients
  • Development of institutional-grade DeFi protocols with enhanced security and regulatory compliance

Technology Innovation:

  • Advancement of formal verification tools for smart contract security
  • Development of more sophisticated approval mechanisms that provide security without sacrificing usability
  • Integration of AI-powered security monitoring to detect and prevent exploits in real-time

6.3 Strategic Positioning and Global Competition

Singapore faces a critical strategic question: should it maintain its current stringent regulatory approach, potentially sacrificing some innovation velocity, or ease restrictions to remain competitive with other jurisdictions?

The evidence suggests that Singapore’s “quality over quantity” approach may prove advantageous. While some projects may relocate to more permissive jurisdictions, incidents like the Matcha Meta breach demonstrate the value of robust oversight. Major institutional capital—which will ultimately determine the sector’s mainstream adoption—tends to favor regulatory clarity and investor protection over permissiveness.

Singapore’s unique advantages include:

  • Established Financial Infrastructure: Decades of trust as a global financial center
  • Regulatory Credibility: MAS’s reputation for thoughtful, effective oversight
  • Geographic Position: Strategic location between major Asian markets
  • Talent Pool: Highly educated, tech-savvy population
  • Political Stability: Consistent, long-term policy approach

These factors position Singapore well to become the “Switzerland of crypto”—a jurisdiction that may not have the largest market but commands premium positioning through regulatory excellence, security, and institutional trust.

6.4 The Path to Institutional DeFi Leadership

Perhaps the most significant opportunity arising from the Matcha Meta incident is the validation of Singapore’s institutional DeFi strategy. Rather than trying to win on retail trading volume or permissionless innovation, Singapore is positioning itself as the jurisdiction where traditional finance can safely engage with DeFi infrastructure.

This strategy aligns with broader trends:

  • Growing institutional interest in tokenized real-world assets (RWAs), which grew 63% to $2.57 billion
  • Increasing use of stablecoins for business payments and payroll (9.6% of global on-chain payroll)
  • Major financial institutions seeking regulated pathways to offer crypto services to clients
  • Corporate treasuries increasingly allocating to digital assets, projected to own 2.3 million BTC by 2026

By creating frameworks where institutions can confidently deploy capital into DeFi infrastructure while maintaining compliance and security standards, Singapore could capture the most valuable segment of the market—even if retail volume migrates elsewhere.

7. Conclusion

The $16.8 million Matcha Meta security breach represents more than a significant DeFi exploit—it encapsulates the complex challenges and opportunities facing Singapore as it seeks to lead the global transition to regulated digital finance. For a nation that has achieved the world’s highest crypto adoption rate while simultaneously implementing some of the strictest regulations, the incident provides both validation and warning.

The breach validates MAS’s cautious approach to DeFi oversight. By targeting the interfaces and entities that connect users to protocols, Singapore’s regulatory framework aims to prevent exactly the kinds of vulnerabilities that SwapNet exhibited. Had SwapNet been subject to MAS’s operational resilience and cybersecurity requirements, the exploit might have been identified and addressed before causing harm to users.

Yet the incident also highlights the limitations of regulation in truly decentralized systems. No amount of oversight can eliminate all risks in an ecosystem characterized by rapid innovation, complex technical architecture, and global, permissionless protocols. Singapore must continue balancing its desire for comprehensive regulation against the reality that overly restrictive frameworks may drive innovation to more permissive jurisdictions.

For Singapore’s crypto users—the 11% of the population with digital asset holdings—the breach serves as a critical reminder that adoption must be accompanied by education. Understanding approval mechanisms, smart contract risks, and security best practices is not optional for participants in decentralized finance. The SingSaver/Coinbase finding that 62% of users rely primarily on social media for crypto knowledge suggests urgent need for more robust educational infrastructure.

Looking forward, Singapore appears positioned to emerge from this incident with its long-term strategy intact. The nation’s focus on institutional DeFi through initiatives like Project Guardian, coupled with its leadership in stablecoin development and RWA tokenization, creates a path toward regulated digital finance that can deliver innovation while maintaining the security and trust that traditional institutions require.

The Matcha Meta breach will likely accelerate several trends already underway:

  • Market bifurcation between regulated institutional DeFi and permissionless retail platforms
  • Enhanced security standards and third-party vetting requirements for DeFi platforms
  • Greater emphasis on user education and interface improvements to make security accessible
  • Continued regulatory evolution balancing innovation with consumer protection

The incident also serves as a test case for regional competition in Asia-Pacific. Hong Kong, the UAE, Japan, and South Korea are all vying for crypto hub status. Singapore’s response to this breach—whether it results in measured regulatory refinements or heavy-handed restrictions—will influence how the region’s crypto landscape develops over the coming years.

Ultimately, the Matcha Meta breach is neither a fatal blow to Singapore’s crypto ambitions nor a complete vindication of its regulatory approach. Instead, it represents one chapter in the ongoing evolution of digital finance—a reminder that building truly secure, accessible, and innovative financial infrastructure requires continuous learning, adaptation, and collaboration between regulators, platforms, and users.

For Singapore, the path forward is clear: maintain regulatory rigor while enabling innovation, prioritize institutional infrastructure while educating retail users, and continue positioning itself not as the largest crypto market, but as the most trusted one. In a world where digital asset adoption is accelerating globally—with the crypto market projected to reach $7.98 trillion by 2030—trust, security, and regulatory clarity may prove to be the most valuable competitive advantages of all.

8. Recommendations

8.1 For Users

  • Immediately audit all active token approvals using tools like Revoke.cash and revoke unnecessary permissions
  • Always use One-Time Approvals or equivalent features when available on DeFi platforms
  • Separate DeFi trading wallets from long-term storage wallets to limit exposure
  • Prioritize MAS-licensed platforms that meet Singapore’s regulatory standards
  • Invest time in understanding DeFi security through reputable educational resources

8.2 For Platforms

  • Conduct comprehensive security audits of all integrated third-party protocols
  • Implement One-Time Approvals as the default, not optional, approval mechanism
  • Develop real-time monitoring systems to detect suspicious smart contract behavior
  • Create clear, prominent user interface warnings about approval risks
  • Establish incident response protocols including user notification and compensation mechanisms

8.3 For Regulators

  • Develop specific cybersecurity and operational resilience standards for DeFi platforms
  • Require platforms to conduct and publish regular security audits of integrated protocols
  • Establish clear liability frameworks for platforms when integrated third-party protocols are compromised
  • Launch comprehensive public education initiatives on DeFi security best practices
  • Consider insurance or recovery fund requirements for certain categories of DeFi services

8.4 For the Industry

  • Develop industry-wide security standards and best practices for approval mechanisms
  • Create open-source security tools that help users manage and audit their token approvals
  • Establish industry-wide incident response and information sharing protocols
  • Invest in research and development of more secure smart contract architectures

About This Report

This analysis was prepared on January 27, 2026, based on publicly available information about the Matcha Meta security breach and Singapore’s cryptocurrency regulatory environment. The report synthesizes information from blockchain security firms, regulatory announcements, academic research, and industry reports to provide comprehensive insight into the incident’s implications for Singapore’s digital asset ecosystem.

For questions or additional information, readers are encouraged to consult official sources including the Monetary Authority of Singapore (MAS) website, Matcha Meta’s official communications, and reputable blockchain security firms such as PeckShield and SlowMist.