Carrefour Responds to Security Threats 3x Faster With Splunk Cloud Platform

Discover how Carrefour strengthened its global security posture and accelerated digital innovation by adopting Splunk Cloud Platform. By centralizing data and security monitoring across multiple regions, Carrefour’s Security Operations Center (SOC) now detects and responds to threats three times faster ensuring customers enjoy a safe, reliable, and connected shopping experience across all channels.

Strengthening Security for a Seamless Shopping Experience

What happens when digital growth outpaces legacy defences?

As one of the world’s largest retailers, Carrefour is trusted by millions of customers across Europe, South America and Asia. Yet with every new online store, app feature and “click and collect” service, the pressure on its ageing infrastructure grew. To protect its expanding digital ecosystem and maintain customer trust, Carrefour turned to Splunk Cloud Platform transforming its approach to security, insight and innovation.

With Splunk, Carrefour’s Security Operations Centre (SOC) now detects and responds to threats three times faster, all while freeing up resources to enhance the customer experience.

“Splunk Cloud Platform allows us to refocus on our most important task: ensuring customers always have a safe shopping experience.”— Romaric Ducloux / SOC Analyst / Carrefour

The challenge: Complexity without clarity

Carrefour’s ambition to deliver a unified, multi-channel shopping experience brought with it new layers of digital complexity. Customers expected the same convenience whether shopping online, via mobile or in store but behind the scenes, security data was fragmented across legacy systems and regions.

The SOC team spent hours maintaining infrastructure and stitching together alerts from disconnected tools. Each system spoke a different language, making it difficult to detect, prioritise or investigate threats in real time.

“We had plenty of data, but not enough visibility,” recalls Ducloux. “Our analysts were managing systems instead of protecting them.”

The turning point: Centralising intelligence with Splunk

Carrefour chose Splunk Cloud Platform to unify its global security operations under one intelligent, cloud-based system. Splunk now ingests and analyses logs from every corner of Carrefour’s environment from antivirus software to endpoint detection and response tools automatically raising alerts and opening tickets when anomalies arise.

“Splunk Cloud Platform handles all our logs it’s the cornerstone of our security operations,” says Ducloux.

By moving to the cloud, Carrefour offloaded the management of infrastructure to Splunk, allowing its SOC analysts to focus on higher-value tasks such as threat analysis, forensics and prevention. The result: a more agile, proactive and resilient security posture.

The results: Speed, insight and customer confidence

With Splunk Cloud Platform, Carrefour has redefined how it protects its customers and its business.

• Three-times faster incident response through centralised, automated alerting.

• Real-time visibility into security events across all channels and markets.

• Smarter decision-making, powered by actionable data and analytics.

• More time for innovation, enabling Carrefour to enhance digital services securely.

The SOC team can now intervene before incidents escalate and, when they do occur, understand precisely what happened and how to prevent a recurrence.

“We get so much value from Splunk,” says Ducloux. “It helps us learn from every incident and strengthen our defences continuously.”

Empowering teams through accessibility and collaboration

Splunk’s intuitive language and powerful analytics make it accessible not just to technical experts but also to business users. This shared visibility means the entire organisation can act swiftly and independently during a security event.

Using Splunkbase apps, Carrefour easily integrates new data sources and SaaS tools, supporting its ongoing digitisation strategy and its ambitious plan to triple e-commerce sales to €10 billion by 2026.

“Splunk gives us the confidence to innovate, to launch new digital features knowing our security foundation is strong,” adds Ducloux.

A secure foundation for growth

Carrefour’s partnership with Splunk has turned its security operations from reactive to predictive. With greater speed, scalability and insight, the company is now better equipped to protect its expanding digital ecosystem while continuing to deliver seamless, trusted shopping experiences worldwide.

“We’ll know we’ve succeeded when customers feel safe and confident wherever and however they shop,” says Ducloux.

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