Payment Forensics in Banks: Common Breach Scenarios
Payment Forensics Investigation (PFI)
Respond to Payment Card Breaches with Speed, Precision, and Regulatory Confidence.
Why it matters
Organizations face complex challenges across investigation, compliance, and response when navigating suspected cardholder data compromises.
Addressing the immediate risks of regulatory penalties, reputational damage, and legal exposure following a breach.
Investigating unauthorized access to the Cardholder Data Environment (CDE) or unusual fraud patterns traced back to the merchant.
Managing the fallout from unencrypted card data storage or accidental retention of Sensitive Authentication Data (SAD).
Identifying how an incident occurred and assessing the true extent of cardholder data exposure.
Fulfilling the strict mandates of acquiring banks, card networks, and regulators when a compromise is suspected or confirmed.
Our Approach
Five step approach
SISA Sappers’ every engagement is conducted in accordance with PCI SSC requirements, ensuring actionable clarity for merchants, banks, and processors while resolving incidents with precision and regulatory alignment.
Define scope based on PCI SSC rules, card brand mandates, and affected merchant environment.
Establish communication with acquirer and card schemes.
Secure forensic images of payment systems, servers, and POS devices
Collect network traffic, application, and database logs.
Ensure strict chain-of-custody compliance.
Create bit-level images to preserve system integrity.
Conduct preliminary checks for Indicators of Compromise (IOCs).
Identify compromise vector and vulnerabilities exploited.
Trace attacker activity within the CDE
Validate presence/absence of unencrypted card data.
Develop a PCI SSC–aligned PFI Report with validated findings.
Provide Root Cause Analysis (RCA), incident timeline, and impact assessment.
Share recommendations to restore PCI DSS compliance and prevent recurrence.
Service Offerings
Service Offerings
PCI Forensic Investigation Services
Mandated PCI Forensic Investigations (PFI)
Payment Incident Containment & Breach Scoping
Advanced Malware & Endpoint Forensics
Defensible Regulatory Reporting & Compliance Restoration
BENEFITS
SISA combines speed, regulatory rigor, and evidence-backed clarity in every investigation to deliver clear, defensible outcomes.
Speed to Clarity:
Rapid investigation turnaround, delivering regulator-ready reports within tight compliance deadlines.
Regulatory Alignment:
Every engagement is conducted in strict accordance with PCI SSC guidelines and requirements.
Actionable Clarity:
Clear, structured findings that satisfy the demands of merchants, acquiring banks, and processors.
Defensible Outcomes:
Validated evidence and reporting that stands up to scrutiny in legal proceedings and regulatory reviews.
WHY SISA
Our Differentiators
Officially accredited by the PCI Security Standards Council as a PCI Forensic Investigator (PFI).
Proven forensic depth with advanced skills in network intrusion reconstruction and log correlation.
Decades of specialized experience across merchants, payment processors, fintech, and banking environments.
SISA Sappers resolve high-stakes incidents with unmatched precision and regulatory alignment.
Strict chain-of-custody protocols that guarantee the integrity of all collected evidence.
A global leader in payment security, combining deep incident response capabilities with continuous compliance expertise.
Want to know more?
FAQs
A Payment Forensics Investigation (PFI) is a mandatory, highly specialized forensic audit triggered following a suspected or confirmed payment card data breach. It investigates how the breach occurred and determines the exact point of cardholder data compromise.
PFI investigations specifically target retail, hospitality, and e-commerce. Ultimately, any industry doing credit card processing that experiences a suspected data breach or fraudulent transaction spike is mandated by the card brands to engage a certified PFI.
An investigation is triggered when merchant banks, payment brands (Visa, Mastercard, Amex), or card networks detect a high concentration of fraudulent transactions traced back to a common point of purchase, signaling a potential network breach.
The primary goals are to identify the initial source of entry, isolate the malware or attack vector, determine the exact window of compromise, define the total volume of compromised card data, and verify that immediate containment has been achieved.
Standard incident response firms handle general network containment and recovery. A PFI company is specifically certified by the PCI SSC, possessing the specialized legal, forensic, and payment-system expertise required to submit official reports to global card brands.
A Preliminary Report is a critical document submitted to the card brands within a tight window post-engagement. It outlines the initial attack vector discovered, current containment status, and immediate security measures implemented to halt ongoing card leaks.
Failing to engage a certified PFI after a payment breach can result in massive fines from card brands, the immediate termination of the merchant’s ability to process card transactions, and complete liability for all fraudulent charges.
SISA is one of the elite, globally authorized PCI Forensic Investigator (PFI) companies. Backed by our forensics and incident response specialists, we deliver urgent containment, technical root-cause analysis, and official breach reporting trusted by major card networks worldwide.
Hear what our customers say
Over the past three years, SISA has been a trusted cybersecurity partner, helping us strengthen our security posture through services such as Breach and Attack Simulation (BAS), Advanced Threat Hunting and monitoring via their ProACT Agentic SOC platform. Their practical, real-world threat simulations have provided valuable visibility into the effectiveness of our security controls, enabling us to identify gaps, prioritize improvements, and enhance threat detection and response capabilities. SISA’s expertise, responsiveness, and outcome-focused approach have made them a reliable partner in advancing our overall cybersecurity resilience.
Sreerag V M
Cybersecurity Manager in EqualizeRCM Services
SISA Sappers has been a trusted Digital Forensics and Incident Response partner, consistently demonstrating strong expertise in cybersecurity, incident response, digital forensics, and threat investigations. Their team delivers timely updates, maintains clear and effective communication, and provides comprehensive, well-structured reporting, ensuring transparency throughout each engagement. SISA collaborates closely with our internal teams to effectively manage and resolve complex cyber incidents and security challenges. Their professionalism, technical capabilities, and actionable recommendations have contributed significantly to strengthening our security posture, improving incident response capabilities, and enhancing overall cyber resilience.
MJ
Security Lead, A Leading Financial Institution in South East Asia
SISA’s Breach and Attack Simulation gave us practical visibility into how our security controls performed under real-world attack scenarios. The simulations across external, internal, and O365 environments helped us identify which controls were effective, where gaps existed, and what needed immediate attention. Because SISA’s detection capabilities were already integrated into our environment, we could also better understand how attacks were detected and handled across different stages of the simulation. What stood out most was the transparency of the engagement and the actionable guidance the team provided throughout the process.
Tej Pratap Bisht
Head of Cybersecurity & DevSecOps, Reach Mobile
