Dark web credential threats put real accounts at risk when criminals obtain a login and abuse it. MITRE ATT&CK calls this abuse of existing accounts Valid Accounts and lists it for initial access and persistence. This story says Defacto, a retailer with 30 million customers, found customer passwords being sold on the dark web and moved to respond.
When customer passwords started appearing on the dark web, Defacto needed 100% accurate intelligence — fast.
CUSTOMERS: 30 million
What Dark Web Credential Threats Did Defacto Face?
The stakes of protecting a global retailer
Defacto is one of Turkey’s most recognized fashion and retail brands, serving over 30 million customers worldwide with 17,000 employees across a global footprint.
The company needed a solution that could verify 100% of incoming threat intelligence, respond in real time, and eliminate the human error that plagued traditional security workflows. That’s exactly what Brandefense 2.0 delivered.
THE TRIGGER MOMENT
Customer passwords were being actively sold on the dark web. Defacto needed to act with 100% confidence and zero delay. Traditional security tools could not move fast enough. Brandefense changed that.
What Challenges Came with Protecting 30 Million Customers?
A threat landscape that never sleeps
Rapidly evolving threat landscape New cyber threats emerged daily, making traditional security solutions inadequate for a company operating at Defacto’s scale.
Massive data sensitivity Millions of customer records — any breach could cause severe financial loss and irreparable reputation damage.
Employee awareness at scale Ensuring 17,000 employees remained cyber-aware across a global operation posed a significant ongoing challenge.
Hybrid IT environment complexity Scaling risk reduction across hybrid environments required streamlined, automated workflows.
- Fast-changing threatsNew cyber threats emerged daily.
- Sensitive customer dataMillions of customer records were at stake.
- Employee awareness at scale17,000 employees needed to stay cyber-aware.
- Hybrid IT complexityScaling risk reduction needed streamlined, automated workflows.
Solution Highlights
How Brandefense 2.0 delivered
Rapid response time: What previously took days was compressed into minutes. Brandefense’s real-time alerts and fast support team ensured threats were contained before escalation.
Streamlined collaboration: Complex workflows across Defacto’s hybrid IT environment were simplified and accelerated, resulting in measurable operational efficiency gains.
Error elimination & data integrity: Human errors in data collection were fully eliminated. The accuracy and integrity of both customer and employee data improved dramatically.
Zero-day vulnerability protection: Defacto stayed protected even against previously unknown threats — Brandefense’s proactive detection intercepted zero-day risks before exploitation.
Results & Benefits
What changed after Brandefense 2.0
Days→Min // Response time Potential threats addressed in real time, 24/7.
Zero // Data collection errors AI-driven, consistent intelligence pipeline.
Enhanced // Threat detection Emerging threats detected and mitigated before damage.
Improved // Compliance posture Stronger data protection compliance, trusted by partners.
“ Brandefense has transformed our cybersecurity strategy. It’s like having an army of cyber guardians constantly watching over our data. Our team is now better equipped to handle emerging threats, and our clients can trust us with their most sensitive information. “ Onur İmamoğlu (Information Security & IT Governance Unit Manager, Defacto)
Conclusion
Proactive security is the only way forward
Defacto’s journey with Brandefense 2.0 illustrates a fundamental truth: in today’s threat landscape, reactive security is no longer enough. By embracing advanced threat detection, zero-day protection, and an automated intelligence pipeline, Defacto has fortified its defenses and maintained the trust of millions of customers.
In an era of evolving cyber threats, proactive measures are not optional — they are the foundation of digital resilience for any business operating at scale.
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