A leading e-commerce retailer operating more than 4.2 million customer accounts experienced rising account takeover attacks, payment fraud, and automated abuse targeting customer-facing APIs. Our security consultants conducted an application security assessment, implemented stronger identity controls, enhanced fraud detection capabilities, and performed comprehensive API security testing. The engagement reduced payment fraud by 67%, protected millions of customer accounts, and prevented an estimated $3.1M in annual fraud losses while maintaining a seamless customer experience.
E-Commerce
Reduced Payment Fraud by 67% Across 4.2 Million Accounts
Application security review, fraud detection modernization, MFA deployment, and API security testing reduced payment fraud by 67%.
Executive Summary
The Engagement at a Glance
Challenge
Where the Organization Stood
A rapidly growing online retailer serving millions of customers experienced increasing account takeover attacks, payment fraud losses, and API abuse that threatened customer trust and revenue growth.
Account Takeovers
Credential stuffing attacks led to increasing numbers of compromised customer accounts.
Payment Fraud
Fraudulent transactions were driving significant chargeback and operational costs.
API Abuse
Public-facing APIs lacked sufficient protection against automated attacks and abuse.
Solution
What We Did
Application Security Review
Comprehensive assessment of customer-facing applications, authentication workflows, and APIs.
MFA Deployment
Multi-factor authentication introduced for high-risk customer activities and account recovery.
API Security Testing
Security testing identified weaknesses in authentication, authorization, and business logic.
Fraud Monitoring
Enhanced fraud detection and continuous monitoring improved transaction visibility.
Results & Outcomes
What Changed
67%
Fraud Reduction
Fraudulent transactions dropped significantly following implementation.
4.2M
Accounts Protected
Customer accounts benefited from stronger identity and fraud controls.
$3.1M
Losses Prevented
Estimated annual fraud losses avoided after remediation.
99.98%
Checkout Availability
Security improvements were delivered without impacting customer experience.
Key Takeaways
What Made This Engagement Work
Identity Is The First Line Of Defense
Most successful fraud attempts began with compromised customer credentials.
Visibility Improves Response
Enhanced monitoring enabled fraud teams to identify suspicious activity faster.
Security And UX Must Coexist
Controls were designed to improve security without increasing customer friction.
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