Case Study: Financial Security

Client: Global retail bank with 12 million digital customers and annual online transaction volume exceeding $20 billion.

Challenge

The bank experienced a 27% year-over-year spike in payment fraud and was at risk of non-compliance across PCI DSS, SOX, and GDPR audit checkpoints. Legacy fraud controls were siloed, and transaction monitoring produced high false positive rates, leading to poor customer experience and manual review overload.

Solution

• Implemented behavior-based fraud detection using ML models integrated into transaction workflows.
• Deployed secure payment architecture with tokenization, HSM-based key management, and end-to-end encryption.
• Automated risk scoring updates linked to global threat intelligence and real-time device fingerprinting.
• Delivered governance through updated policies, PCI DSS controls and a 12 month cross-functional incident response drill cadence.

Results

• 70% reduction in confirmed fraud losses within 9 months.
• False positive rate dropped from 26% to 9%, accelerating legitimate transaction approval.
• PCI DSS compliance achieved on first audit cycle with zero major findings.
• 48% improvement in customer satisfaction for digital payments.

"Decosecurity transformed our fraud posture and enabled us to restore customer confidence while meeting strict regulatory deadlines."