Proactive security, PCI DSS audit management, QSA coordination and remediation for payment businesses — from staying ahead of findings to getting back to compliant when something has already gone wrong.
Most security work arrives in one of three modes: you want to prevent problems, you have an audit coming up, or something already went wrong. Paying runs all three as one lifecycle.
Pen testing, hardening, continuous monitoring and vulnerability scanning across web, mobile, network and cloud — before a QSA or attacker finds the issue first.
PEN TESTING · HARDENING · MONITORINGEnd-to-end PCI DSS audit management: assessment, gap analysis, QSA coordination, documentation, evidence collection and final certification.
PROPRIETARY TESTING · QSA · DOCUMENTATIONWhen an audit returns findings or a breach has already happened, we analyze the failure, build the remediation plan, execute the fixes and stay through retest and final compliance.
FINDINGS · BREACH RESPONSE · RECERTPCI DSS handles scale and correlation. Senior testers handle depth: chained vulnerabilities, business logic, authentication bypasses and attack paths automated tools cannot replicate.
Gap analysis, vulnerability assessment, application security review, code review and hands-on validation across the full environment.
We collaborate with all major Qualified Security Assessors and security firms rather than replacing the relationship you already trust.
Policies, procedures, network diagrams, scope documentation, SAQ/AOC preparation and evidence written the way auditors expect it.
Vulnerability scanning, threat detection, log monitoring and quarterly reviews keep the next audit from becoming another scramble.
Security works better as an operating function than a once-a-year project. The same engineers can stay across testing, audit support, remediation and the next compliance cycle.
Our security team builds proprietary testing tools alongside the commercial and open-source stack — for tests that need to be tailored, repeatable and fast enough to hold up under QSA scrutiny.
Internal and external tests, web and mobile applications, network and cloud infrastructure — tailored to payment-specific threats.
CUSTOM · REPEATABLE · PAYMENT-SPECIFICAutomation catches the obvious; senior engineers walk the application, review code and probe the subtle edge cases.
SCAN · VERIFY · EXPLOITPrepare evidence, walk through findings, execute remediation and stand ready for retest with your assessor.
EVIDENCE · FINDINGS · RETESTPaying.co collaborates with all major Qualified Security Assessors and security firms in the payments space. The QSA you already trust stays at the center of the engagement.
We've worked alongside the major Qualified Security Assessors that audit payment companies — the firms accredited by the PCI Security Standards Council.
We collaborate with major security and consulting firms across pen testing, incident response, and assessment engagements — complementing their work.
Full PCI Data Security Standard 4.0 expertise — the current standard, the requirements that came with it, and the future-dated timelines still rolling in.
One project manager handling the QSA relationship across initial assessment, gap analysis, remediation, evidence collection, and final certification.
Policies, procedures, network diagrams, scope documentation, SAQ/AOC preparation, and the evidence trail that backs every control.
The same engineers across consecutive audit cycles. We stay through all of it, so each cycle starts ahead of where the last one ended.
Firewall configuration, network segmentation, traffic monitoring and intrusion detection.
OWASP Top 10, XSS, SQL injection, broken authentication, API security and manual review.
Mobile app penetration testing, static and dynamic analysis, runtime protection and secure storage.
AWS, Azure and GCP configuration review, IAM, storage, network segmentation and IaC hardening.
Initial assessment, gap analysis, remediation, evidence package and certification across DSS 4.0.
Authentication, authorization, RBAC, identity management and privileged access review.
Security policies, procedures, compliance documentation and incident-response governance.
Ongoing vulnerability scanning, threat detection, log monitoring and SIEM integration.
Current PCI status, existing findings, QSA relationship and cardholder-data scope.
Map the environment against PCI DSS v4.0 and prioritize gaps by audit risk and effort.
Technical fixes, configuration changes, policies, training and documentation sequenced for execution.
Coordinate evidence, retest, AOC issuance and the ongoing support that keeps the next audit clean.
Tell us whether you need an external test, internal segmentation validation, a full PCI engagement, or continuous coverage. We'll return a scope, timeline and fixed price.
Tell us about your project — we route you to the right specialist.