BNB Chain has achieved ISO/IEC 27001 and ISO/IEC 27701 certifications following an independent audit by the British Standards Institution (BSI), marking a significant step in its efforts to strengthen information security and privacy management across its infrastructure. The certifications cover BNB Chain’s internal systems used to deploy and operate smart contracts, manage cryptographic keys, and oversee related operational processes. The announcement places greater emphasis on the systems and controls supporting the network rather than suggesting that every application or smart contract built on BNB Chain has been certified.

What the certifications mean

ISO/IEC 27001 is one of the most widely recognised international standards for information security management systems. It requires organisations to establish a structured framework for identifying, assessing and addressing security risks, while protecting the confidentiality, integrity and availability of information. For BNB Chain, this includes documented policies, access controls, risk-management procedures and processes for responding to security incidents. The certification indicates that these practices have been assessed against an internationally recognised framework, rather than relying solely on individual technical safeguards.

ISO/IEC 27701 focuses on privacy information management. The standard provides requirements for establishing, maintaining and continually improving a Privacy Information Management System, or PIMS. It is designed to help organisations manage personally identifiable information responsibly and demonstrate accountability in the way data is collected, processed and protected. Together, the two certifications address complementary areas: ISO 27001 focuses primarily on information security, while ISO 27701 adds privacy governance and data-management requirements.

Why the milestone matters

Blockchain networks operate in an environment where security failures can have immediate financial consequences. Smart-contract exploits, compromised administrative keys, bridge vulnerabilities and poor access management have repeatedly affected the digital-asset industry. Although ISO certification cannot eliminate these risks, it can create a more consistent process for identifying and managing them. BNB Chain’s certification is particularly relevant as blockchain infrastructure becomes increasingly integrated with decentralised applications, financial services, tokenised assets and enterprise use cases. Developers, institutions and partners often require clearer evidence that an infrastructure provider has formal security and privacy processes in place. The BSI audit also adds an independent layer of assurance. BSI is the United Kingdom’s national standards body and a globally recognised certification organisation. Its assessment means the certification was based on an external review of BNB Chain’s stated systems and operating processes, rather than only an internal declaration.

Certification is not a guarantee

BNB Chain has clarified that ISO 27001 certification does not mean the network is impossible to hack. Instead, the audit evaluates how security risks are identified, how access is controlled, how incidents are handled, and whether those processes are documented and reviewed regularly. That distinction is important for users and developers. The certification applies to the audited scope of BNB Chain’s infrastructure; it does not automatically certify third-party protocols, decentralised applications or smart contracts deployed on the network. Individual projects must continue to conduct their own code reviews, audits, monitoring and incident-response planning.