PCI 3DS is a security standard designed to protect environments involved in 3-D Secure (3DS) payment authentication. It is mainly relevant to organisations that operate functions such as the 3DS Server (3DSS), Directory Server (DS), and Access Control Server (ACS).
3-D Secure is widely used to add an authentication layer to online card transactions. PCI 3DS focuses on protecting the systems and infrastructure that support this process.
What Is PCI 3DS?
PCI 3DS, or the PCI 3-D Secure Security Standard, provides security requirements for organisations operating applicable 3DS environments.
It covers areas such as access control, system security, network protection, monitoring, authentication, vulnerability management, and physical security.
The main objective is simple: protect the 3DS environment and reduce security risks during cardholder authentication.
Who Needs PCI 3DS Compliance?
PCI 3DS is not automatically required for every company that uses 3-D Secure.
It is particularly relevant to organisations operating:
• Access Control Server (ACS)
• Directory Server (DS)
• 3DS Server (3DSS)
For example, payment service providers, issuers, and technology providers operating these 3DS functions may need to undergo a PCI 3DS assessment.
The exact requirement depends on the organisation's role, environment, and applicable payment-brand requirements.
PCI 3DS vs PCI DSS
PCI 3DS and PCI DSS are related but different standards.
PCI DSS focuses broadly on protecting payment account data, while PCI 3DS focuses on security of applicable 3-D Secure environments.
Having PCI DSS compliance does not automatically make an organisation PCI 3DS compliant.
In some cases, PCI DSS assessment results may be leveraged for specific PCI 3DS requirements, but this does not replace the complete PCI 3DS validation process.
What Does a PCI 3DS Assessment Involve?
A PCI 3DS assessment normally starts with understanding the complete 3DS environment and its scope.
The organisation then reviews its existing security controls, identifies gaps, fixes weaknesses, and prepares supporting evidence.
The assessment can cover:
• Access and authentication controls
• Network and system security
• Logging and monitoring
• Vulnerability management
• Cryptographic protection
• Physical security
• Security policies and procedures
A qualified PCI SSC 3DS Assessor performs the applicable assessment and reporting process.
Why Is PCI 3DS Important?
Online payment fraud continues to make secure authentication important for businesses involved in card-not-present transactions.
PCI 3DS helps organisations build stronger security around the infrastructure supporting 3-D Secure authentication. It can also help organisations demonstrate that appropriate security controls are implemented within their applicable 3DS environment.
Conclusion
PCI 3DS is an important security framework for organisations operating core 3-D Secure functions. Understanding the scope, applicable requirements, security controls, and assessment process is essential before starting a compliance project.
A proper PCI 3DS assessment should focus on the organisation's real technical environment rather than treating compliance as only a documentation exercise.
Frequently Asked Questions
Is PCI 3DS the same as PCI DSS?
No. PCI DSS is a broader payment security standard, while PCI 3DS focuses on applicable 3-D Secure environments.
Does every merchant need PCI 3DS?
No. Using 3-D Secure does not automatically mean that a merchant needs a PCI 3DS assessment. The organisation's actual 3DS functions and scope must be evaluated.
What are ACS, DS and 3DSS?
ACS means Access Control Server, DS means Directory Server, and 3DSS means 3DS Server. These are key functions within the 3-D Secure ecosystem.
How can an organisation prepare for PCI 3DS?
Start with accurate scope identification, perform a gap assessment, implement required controls, collect evidence, and complete the assessment with a qualified PCI 3DS Assessor.
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