PCI Secure Software Lifecycle (S-SLC) Overview
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PCI S-SLC (Secure Software Lifecycle)
The PCI Secure Software Lifecycle (PCI S-SLC) standard helps software vendors embed security into every phase of development. SISA helps organizations align their software development lifecycle with PCI S-SLC requirements, ensuring secure design, development, testing, release, and maintenance of applications used within the payment ecosystem.
Why it matters
Payment software vendors face several challenges in embedding security throughout the development lifecycle, including:
Inconsistent secure development practices across engineering teams
Lack of governance and documentation around secure SDLC processes
Difficulty aligning internal development workflows with PCI S-SLC expectations
Limited visibility into vulnerabilities introduced during development and release cycles
Challenges preparing structured evidence for PCI S-SLC validation
Our Approach
A Practical, Structured Path to PCI S-SLC Validation
SISA follows a practical and PCI SSC aligned approach to help organizations strengthen their secure software development lifecycle while maintaining development agility.
Evaluate whether PCI S-SLC applies to your organization and assess overall readiness against S-SLC requirements.
Assess policies, procedures, and governance covering secure architecture, coding practices, release management, and vulnerability handling.
Identify gaps across governance, secure development practices, training programs, and testing processes.
Provide actionable recommendations to strengthen SDLC controls while aligning with existing development workflows.
Support organizations through PCI S-SLC assessments, evidence preparation, and validation readiness.
Service Offerings
Our PCI S-SLC services provide comprehensive advisory and validation support across the secure development lifecycle
PCI S-SLC Applicability and Readiness Assessment
Secure Development Lifecycle (SDLC) Governance Review
Secure Coding and Architecture Practice Evaluation
Development and Testing Control Gap Analysis
Remediation Planning and Implementation Guidance
PCI S-SLC Validation and Assessment Support
BENEFITS
SISA’s secure-by-design software development help organizations secure software development across the lifecycle
Security embedded throughout the software development lifecycle
Reduced risk of vulnerabilities in production software
Improved consistency in development and release practices
Stronger assurance for customers, partners, and regulators
Greater readiess for PCI S-SLC validation and compliance reviews
Continuous Compliance Support:
WHY SISA
A Trusted Partner for Secure Software Development in the Payment Ecosystem
Deep Expertise in Payment Security
Extensive experience as a leading global PFI working with banks, fintechs, and payment software providers.
Strong SDLC & Governance Knowledge
Hands-on expertise aligning development practices with PCI S-SLC requirements.
Practical Security Implementation
Security improvements designed to integrate with existing engineering workflows.
Audit-Ready Documentation
Structured evidence and documentation to support PCI SSC validation.
Outcome-Focused Advisory
Clear guidance that strengthens governance while maintaining development efficiency.
Trusted Advisor to Payment Ecosystem Organizations
A trusted partner helping payment companies, regulators and central banks strengthen security and compliance.
Want to know more?
FAQs
The Secure Software Lifecycle (SLC) Standard, part of the Software Security Framework (SSF), outlines requirements for payment software vendors to integrate security into their entire software development process, from initial design through deployment.
While the PCI S3 standard evaluates the security features of the payment software itself, the Secure SLC standard validates the vendor's internal development, testing, and vulnerability management processes.
Software vendors that build and sell payment applications should attain Secure SLC validation. It demonstrates to clients that the vendor has a mature, security-first development culture capable of defending against modern supply chain attacks.
Yes, vendors with a validated Secure SLC process can self-attest to certain minor software updates (like patches) without needing a full, external PCI S3 reassessment for every minor version release.
A PCI Secure SLC validation is valid for three years, provided the vendor submits an annual attestation confirming that their secure development practices have not degraded and remain in continuous operation.
The standard evaluates four core areas: security governance, secure software engineering (including threat modeling and secure coding), secure software and data management, and security communications (how vulnerabilities are reported and patched).
Yes, the Secure SLC standard is designed to be methodology-agnostic. It easily adapts to modern Agile, CI/CD, and DevSecOps pipelines by focusing on security outcomes rather than dictating rigid, waterfall-style development phases.
Yes, as a qualified SSF Assessor Company, SISA evaluates your organization's development methodologies. We ensure that your software lifecycle seamlessly integrates risk analysis, secure coding practices, and continuous vulnerability management for official SLC validation.
The software development and FinTech industries are the primary targets for PCI Secure SLC. It is specifically designed for software vendors and developers who build, sell, and distribute payment applications or payment processing software to third-party merchants and financial institutions.
Hear what our customers say
We would highly recommend SISA to any organization seeking to enhance their data security and achieve certification. Their expertise, personalized approach, and thorough support set them apart from other providers. With their help, we were able to not only meet ISO 27001 requirements but also improve our overall security practices, giving us peace of mind in knowing that our data is protected.
Siddharth Paigwar
Manager - Cybersecurity, Finnable Technologies
Our experience with SISA’s team through the rigorous HITRUST certification process exceeded our expectations. SISA’s team demonstrated deep expertise, a proactive approach and unwavering commitment to our success. Their invaluable guidance ensured we stayed on track. We highly recommend SISA to any organization pursuing HITRUST certification.
Rajkumar Aich
Senior Manager, Alorica
SISA’s continuous support and regular audits, powered by their advanced monitoring and reporting tools, ensured that our ISMS remained up-to-date and effective against emerging threats. SISA’s team demonstrated a deep understanding of our unique needs and challenges. Their approach was not just professional but also highly collaborative.
Yazan Al-Mallah
Information Security Senior Officer, Network International
SISA’s support was especially invaluable as we navigated the complexities and nuances of this major new version of the PCI standards, particularly in our first year applying these requirements to new backend architecture. Their technical guidance, clarity in determining applicable criteria, insights into relevant evidence for our environment, and exceptional project management and follow-up added significant value to our engagement and made the entire process significantly smoother and more efficient.
Ben Roberts
CTO & CISO, Nutrislice Inc
A heartfelt thank you to SISA’s team for their invaluable support and guidance throughout our ISO 27001 certification journey. Their expertise, dedication, and proactive approach made the process seamless and efficient. We truly appreciate your efforts in helping us strengthen our security framework and achieve compliance successfully!
Upendhra Neelam
GRC Specialist, Innoviti Technologies
We highly recommend SISA’s ISO 27001 certification and audit surveillance services to other organizations. The structured approach, deep expertise, and hands-on guidance significantly streamlined our compliance journey. A heartfelt thank you to SISA’s team for their invaluable support and guidance throughout our ISO 27001 certification journey. Their expertise, dedication, and proactive approach made the process seamless and efficient.
Devender Rewadia
AM - IT, Global Assure
SISA’s unwavering commitment to the project was key to success of all our engagements. Their balanced approach has been instrumental in helping us achieve our goals on the agreed timelines. Their dedication ensures that we can always count on them to deliver on time, every time.
Omar Elwy
Head of InfoSec GRC, eFinance
SISA went beyond helping our Bank meet audit requirements; they added tangible value by strengthening our overall information security posture and enabling continuous improvement, which is critical for ongoing compliance and resilience.
Getachew Bualew
Team Leader, Commercial Bank of Ethiopia
We are incredibly grateful to SISA for their unwavering support and expert guidance throughout our HITRUST Certification journey. The SISA team demonstrated an exceptionally proactive and professional approach. They exhibited extensive understanding of the HITRUST framework, helping us navigate compliance challenges with complete confidence and clarity. We highly recommend SISA to any organization seeking a reliable and knowledgeable advisor for their HITRUST or broader compliance initiatives.
Prashant Poojari
Senior Director - GRC, Exela Technologies
SISA’s support during our first-ever third-party Data Protection Impact Assessment was instrumental. Their comprehensive documentation templates enabled a swift rollout of internal policies and procedures for privacy. The audit team was highly responsive, providing round-the-clock assistance and addressing all queries from initiation to closure, including timely reminders and meticulous tracking. Keep up the excellent work!
Aditya Mathur
Senior Manager - Information Security, Go Payments
