Case Study: Luxury Retailer achieves rapid breach detection and PCI compliance with Splunk Enterprise Security

Luxury Retailer Replaces Legacy SIEM With Analytics-Driven SIEM

A global luxury retailer discovered that its decade-old, outsourced SIEM (HP ArcSight) was failing to detect internal threats after a serious security breach. The legacy system made data ingestion, extraction and search cumbersome, left logs misparsed, forced a bloated SOC, and prevented the company from achieving full PCI and security compliance—creating risk to customer data and brand reputation.

The company migrated to Splunk Enterprise Security in six weeks, cleaned and reindexed legacy logs (nearly 200 sources including POS, firewalls and server events), and built an analytics-driven SOC. The new platform delivered interactive hunting, visualization and rapid incident response, enabled PCI compliance, reduced team overhead, protected customer data and reputation, and opened opportunities to extend analytics into fraud prevention, IT operations and machine learning.