What's causing the sudden 30% increase in chargebacks for international transactions processed through Paystack's API?

Introduction

The sudden 30% increase in chargebacks for international transactions processed through Paystack's API is a critical issue that demands immediate attention. This analysis will systematically identify, validate, and address the root cause while considering both short-term and long-term implications for Paystack's business and its customers.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking this might be a recent phenomenon. When exactly did you first notice this 30% increase in chargebacks?

Why it matters: Pinpointing the timeframe helps correlate the issue with potential triggers. Expected answer: Within the last month. Impact on approach: A sudden spike suggests a specific event or change, while a gradual increase might indicate a systemic issue.

• Considering the international nature of these transactions, I'm wondering if this is affecting all countries equally. Are there specific regions or countries where the chargeback increase is more pronounced?

Why it matters: Geographical patterns could point to region-specific issues or fraud trends. Expected answer: Higher increases in certain regions, e.g., Southeast Asia or Eastern Europe. Impact on approach: Focus on region-specific factors if localized, or global factors if widespread.

• Given the API-based nature of these transactions, I'm curious about any recent changes. Have there been any updates to Paystack's API or integration processes in the last 3 months?

Why it matters: Technical changes could introduce vulnerabilities or processing errors. Expected answer: A minor API update was rolled out 6 weeks ago. Impact on approach: Investigate the specific changes and their potential impact on transaction processing.

• Thinking about user behavior, I'm wondering if there's been a shift in transaction patterns. Has there been any significant change in the average transaction value or frequency for international payments?

Why it matters: Changes in user behavior could indicate external factors or new fraud patterns. Expected answer: A slight increase in high-value transactions. Impact on approach: Analyze the correlation between transaction characteristics and chargeback rates.