A Qualified Security Assessor (QSA) a cybersecurity expert who specializes in assessing an organization's compliance with the Payment Card Industry Data Security Standard (PCI DSS).

PCI DSS provides a baseline of technical and operational requirements designed to enhance payment account data security and protect against threats and secure other elements in the payment ecosystem.

By engaging a QSA can help support organization to:

  • Identify and address potential security vulnerabilities.
  • Conduct comprehensive security assessments aligned with PCI DSS requirements.
  • Implement effective remediation strategies.
  • Perform cybersecurity gap analyses focused on payment card data.
  • Maintain ongoing compliance to avoid penalties or legal consequences.
eWalker is a Qualified Security Assessor Company (QSAC) qualified by the PCI Security Council. Our QSA employees have satisfied all QSA requirements to perform assessments of merchants and service providers who must comply with the PCI Data Security Standard.

PCI DSS Compliance Requirements

Any business that accepts payment card may be required to comply with PCI DSS requirements regularly. Compliance can be demonstrated either by completing a Self-Assessment Questionnaire (SAQ) or undergoing a formal review by a QSAC.

Being a QSAC, eWalker provides expert guidance by:
  • Identifying weaknesses in payment card operation and environment
  • Conducting detailed risk assessments across people, process and technology.
  • Ensuring all systems that store, process, or transmit payment account data are secure.
Final Deliverables

After the assessment, the QSA produces a Report on Compliance (RoC), which documents their findings and any recommended actions. Based on this, the organization receives an Attestation of Compliance (AoC) — a formal declaration that verifies an organization's adherence to PCI DSS requirements.