Client Success Stories
Real-world case studies showcasing how NexNet CyberLabs helped organizations across Africa prevent breaches, respond to incidents, achieve compliance, and transform their security posture.
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Featured Case Studies
Commercial Bank Ransomware Recovery: Zero Downtime, $2.3M Ransom Avoided
Challenge
LockBit 3.0 ransomware encrypted critical banking systems including core banking platform, ATM network, and customer database. Attackers demanded $2.3M ransom with 48-hour deadline.
Solution
Deployed incident response team within 2 hours. Isolated infected systems, activated air-gapped backups, rebuilt infrastructure with enhanced segmentation, and restored operations in 72 hours.
Services Used
- • Digital Forensics & Incident Response
- • Security Assessments
Results & Impact
- Full operational recovery without paying ransom
- Zero data loss from air-gapped backups
- Implemented network segmentation preventing lateral movement
- Deployed EDR across all endpoints within 1 week
- Conducted post-incident security training for all staff
Telecommunications Provider: 627 Gbps DDoS Attack Mitigation
Challenge
Sustained volumetric DDoS attack targeting customer-facing services (mobile app, USSD, web portal) causing service outages affecting 8.5M subscribers. Peak attack volume reached 627 Gbps.
Solution
Activated DDoS mitigation infrastructure with anycast routing, deployed rate limiting at edge, implemented behavioral analysis to distinguish legitimate traffic, coordinated with upstream ISPs.
Services Used
- • Threat Intelligence
- • Security Operations
Results & Impact
- 98% of malicious traffic blocked automatically
- Service availability maintained above 99.97%
- Prevented estimated $1.8M in revenue loss
- Implemented always-on DDoS protection
- Created incident response playbook for future attacks
Gold Mining Operation: Critical Infrastructure Protection & IEC 62443 Compliance
Challenge
Legacy SCADA systems controlling underground ventilation, water pumping, and ore processing had 78 critical vulnerabilities. No network segmentation between IT and OT. Regulatory requirement for IEC 62443 SL-2 compliance.
Solution
Conducted comprehensive OT security assessment, implemented industrial firewalls for IT/OT segmentation, patched/upgraded SCADA systems, deployed passive monitoring for OT networks, achieved IEC 62443 SL-2 certification.
Services Used
- • Security Assessments
- • Governance, Risk & Compliance
Results & Impact
- Achieved IEC 62443 Security Level 2 certification
- Prevented potential $12M in production losses from attacks
- Zero OT security incidents in 18 months post-implementation
- Network segmentation reduced attack surface by 87%
- Trained 45 operations staff on OT security best practices
FinTech Startup: PCI DSS 3.2.1 Certification in 85 Days
Challenge
Fast-growing fintech startup processing 2.5M transactions monthly needed PCI DSS Level 1 certification to partner with major card networks. Failed initial assessment with 127 findings across 12 requirements.
Solution
Provided gap analysis, remediation roadmap, and hands-on implementation support. Redesigned cardholder data environment, implemented tokenization, enhanced access controls, deployed SIEM, conducted penetration testing.
Services Used
- • Governance, Risk & Compliance
- • Security Assessments
Results & Impact
- Achieved PCI DSS Level 1 certification on first re-audit
- 35% reduction in card processing fees (estimated $180K annual savings)
- Implemented tokenization reducing PCI scope by 60%
- Deployed 24/7 log monitoring and alerting
- Established ongoing compliance program with quarterly reviews
Public University: Ransomware Prevention Through Security Transformation
Challenge
University with 18,000 students had outdated security controls, no endpoint protection, weak access management, and frequent phishing incidents. High risk of ransomware attack targeting research data and student records.
Solution
Comprehensive security transformation including EDR deployment, MFA implementation, security awareness training, vulnerability management program, and 24/7 SOC monitoring.
Services Used
- • Security Assessments
- • Security Awareness Training
- • Security Operations
Results & Impact
- Zero ransomware incidents over 24 months (vs. 3 near-misses previously)
- Security posture improved from 23% to 91% (Cybersecurity Maturity Model)
- Phishing click rate reduced from 28% to 6% through training
- 142 high/critical vulnerabilities remediated
- Protected research data worth estimated $4.5M
Government Agency: Advanced Persistent Threat Detection & Remediation
Challenge
Suspected nation-state APT compromise of government network. Indicators of data exfiltration to foreign IP addresses. Need for covert investigation without alerting attackers.
Solution
Deployed forensic collection across 850 endpoints, conducted memory analysis, identified custom malware variants, traced command & control infrastructure, coordinated remediation with law enforcement.
Services Used
- • Digital Forensics & Incident Response
- • Threat Intelligence
Results & Impact
- Identified APT41 (Chinese nation-state group) as threat actor
- Discovered 7 custom malware variants with C2 channels
- Determined 8-month dwell time with access to classified systems
- Successfully eradicated threat actors with coordinated remediation
- Implemented advanced threat detection preventing reinfection
Retail Chain: Enterprise Security Program from Ground Up
Challenge
Retail chain with 180 locations across 4 countries had no formal security program, suffered POS malware incident, and faced compliance requirements for international expansion.
Solution
Built comprehensive security program including governance framework, risk assessments, policy development, security architecture design, vendor risk management, and incident response capability.
Services Used
- • Governance, Risk & Compliance
- • Security Assessments
Results & Impact
- Established security governance program (ISO 27001 framework)
- Deployed payment card encryption across all 180 POS locations
- 76% reduction in payment fraud incidents
- Achieved Capability Maturity Level 3 (from Level 1)
- Enabled international expansion into EU markets with GDPR compliance
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