Crossbow - Enterprise Cybersecurity

Securing EMV 3DS authentication

Securing EMV 3DS authentication starts with a clear understanding of your 3DS environment. As a PCI SSC qualified 3DS Assessor Company, Crossbow helps Access Control Server (ACS), Directory Server (DS) and 3DS Server (3DSS) providers achieve and maintain compliance with the PCI 3DS Core Security Standard.

PCI 3DS workshops give your payments, engineering and security teams the orientation they need before starting the PCI 3DS compliance journey. They cover 3DS scoping, 3DS data handling, cryptographic key management and how your existing PCI DSS program fits in.

01

PCI 3DS Readiness Assessment

Our PCI 3DS Readiness Assessment helps ACS providers, issuer processors, payment gateways and 3DS Server operators identify security gaps before the formal PCI 3DS assessment. We begin by confirming the scope of your 3DS environment (3DE). We map every system that performs ACS, DS or 3DSS functions and every system connected to them. We then review your controls against both parts of the PCI 3DS Core Security Standard: the Part 1 Baseline Security Requirements and the Part 2 3DS Security Requirements. Using the PCI 3DS Data Matrix, we identify where 3DS data elements are stored and confirm whether that storage is permitted. At the end of the assessment, you receive:

  • A detailed gap analysis report with prioritized, actionable recommendations
  • A clear view of which Part 1 requirements your existing PCI DSS assessment can satisfy, where its scope includes the 3DE
  • A realistic timeline to assessment readiness

By closing gaps early, you avoid failed assessments, delayed onboarding with payment brands and costly rework.

02

Remediation Guidance and 3DS Security Controls

Identifying gaps is only the first step. Closing them in a way that holds up under assessment is what achieves PCI 3DS compliance. We provide expert remediation guidance on the control areas that most often delay 3DS validation:

  • Cryptography and key management, including hardware security module (HSM) usage
  • Secure logical access to 3DS systems
  • Protection of 3DS data
  • Physical security of ACS and DS environments

Our experts advise your teams on 3DE segmentation, hardening of 3DS systems, key lifecycle procedures and strong multifactor authentication. We also help you build security policies and incident response plans tailored to 3DS operations. We clarify how your cloud and data center providers fit into 3DS scope and what evidence you need from them. Every recommendation maps to the specific PCI 3DS requirement it addresses, so your teams understand why each control matters and your evidence trail is clear from day one.

03

PCI 3DS Assessment and Attestation

As a PCI SSC qualified 3DS Assessor Company, we validate your 3DS environment against the PCI 3DS Core Security Standard through interviews, system configuration sampling, documentation review and on site inspection of your 3DS facilities. Where your PCI DSS assessment covers the 3DE, we evaluate whether those results satisfy the Part 1 Baseline Security Requirements, so you avoid testing the same controls twice. We then assess every Part 2 3DS Security Requirement, from scope validation and security governance through to cryptography, key management and physical security. At the end of the engagement, we deliver the 3DS Report on Compliance (3DS ROC) and the Attestation of Compliance (3DS AOC) required by the payment brands. Our qualified 3DS Assessors explain findings in plain language and agree clear remediation timelines with you, so the assessment becomes a roadmap rather than a hurdle.

04

Continuous PCI 3DS Compliance

PCI 3DS validation is typically renewed every year, so achieving it once is not enough. New 3DS components, updated EMVCo Letters of Approval, infrastructure migrations and changing payment brand requirements can all move your 3DS environment out of compliance between assessments. Our continuous PCI 3DS compliance services keep you ahead of these changes through:

  • Periodic control, key management and access reviews
  • Vulnerability scanning and penetration testing of 3DS systems
  • Change impact assessments whenever your 3DE evolves
  • Ongoing maintenance of policies, documentation, logs and compliance records

Your evidence stays assessment ready throughout the year, which turns annual revalidation into a confirmation rather than a scramble. With expert guidance at every stage, you can protect 3DS data, reduce card not present fraud risk and keep the trust of the issuers, acquirers and merchants that rely on your 3DS services.

Frequently Asked Questions

Common questions about PCI 3DS scope, how it relates to PCI DSS, and what to have ready before assessment.

What is PCI 3DS?

The PCI 3DS Core Security Standard defines physical and logical security requirements for environments that perform ACS, DS or 3DS Server functions within the EMV 3DS protocol.

Who needs PCI 3DS compliance?

Organizations that perform or provide ACS, DS or 3DS Server functions. Whether validation is mandatory is defined by each payment brand’s compliance program.

What is the difference between PCI 3DS and PCI DSS?

They are separate, independent standards, and compliance with one does not guarantee compliance with the other. A PCI DSS assessment whose scope includes the 3DE can be used to meet the PCI 3DS Part 1 Baseline Security Requirements.

How often is a PCI 3DS assessment required?

PCI 3DS validation is typically performed annually by a PCI SSC qualified 3DS Assessor. Confirm the exact requirement with the relevant payment brands.

What do I need before a PCI 3DS assessment?

Most organizations first complete EMVCo functional testing for their ACS, DS or 3DS Server and receive an EMVCo Letter of Approval.

Is an HSM required for a 3DS Server?

HSM requirements apply to ACS and DS environments. For locations where only a 3DS Server is present, PCI SSC recommends an HSM but does not require one.

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