Critical Infrastructure Under Siege: Ransomware Threatens Africa's Vital Systems

Executive Summary

In early 2026, Africa has witnessed a significant escalation in ransomware attacks targeting critical infrastructure sectors such as power grids, water systems, healthcare, and financial services. These attacks have not only disrupted essential services but also exposed vulnerabilities in national security frameworks.

Current Threat Landscape

Ransomware groups have intensified their operations across Africa, with notable increases in cyberattacks reported in countries like Nigeria, Angola, Kenya, and South Africa. In January 2026, Nigeria experienced an average of 4,701 cyberattacks per organization per week, marking a 12% year-on-year increase. Angola followed with 4,512 attacks per organization per week, a 7% year-on-year decrease. Kenya recorded 2,172 attacks per organization per week, a 41% year-on-year decrease, while South Africa faced 2,145 attacks per organization per week, a 36% year-on-year increase. (intelligentcio.com)

Targeted Sectors

• Power Grids and Water Systems: Ransomware attacks have disrupted power grids and water systems, leading to widespread outages and service interruptions. These attacks often exploit vulnerabilities in industrial control systems (ICS) and supervisory control and data acquisition (SCADA) systems, causing significant operational disruptions. (industrialcyber.co)

• Healthcare Sector: The healthcare industry has become a prime target due to the sensitive nature of patient data and the critical need for uninterrupted services. In May 2025, Mediclinic Southern Africa suffered a cyber extortion attack compromising sensitive HR data, leading to encryption of patient records and temporary loss of access to hospital systems. (intelligentciso.com)

• Financial Sector: Financial institutions have been increasingly targeted, with ransomware groups leveraging stolen credentials and exploiting software vulnerabilities to gain unauthorized access. The rapid exploitation of vulnerabilities within hours of disclosure has been a concerning trend, highlighting the need for prompt patching and robust security measures. (techradar.com)

Notable Threat Actors

While specific ransomware groups targeting African critical infrastructure are not always publicly disclosed, the global landscape provides insight into potential threats. For instance, the Void Rabisu Group, also known as RomCom or Tropical Scorpius, has been linked to both financial cybercrime and intelligence collection via cyberespionage. (ics-cert.kaspersky.com) Additionally, the Akira ransomware group has been active in targeting critical infrastructure sectors, including healthcare and financial services. (bitdefender.com)

Implications and Recommendations

The surge in ransomware attacks against critical infrastructure in Africa underscores the urgent need for enhanced cybersecurity measures. Organizations must prioritize the implementation of robust security protocols, regular system updates, and comprehensive employee training to mitigate the risk of such attacks. Furthermore, governments should consider classifying digital security as critical national infrastructure and extend intelligence-led approaches to organized cybercrime. (itweb.co.za)

Conclusion

The escalating threat of ransomware attacks targeting Africa's critical infrastructure demands immediate and coordinated responses from both public and private sectors. By strengthening cybersecurity frameworks and fostering collaboration, the continent can better safeguard its essential services and maintain national security and economic stability.

Highlights:

• 'In 2026, cybercrime has reached a point of total convergence': New research claims AI attacks are taking over - so how can your business stay safe?, Published on Thursday, March 12
• Healthcare under attack: why cybersecurity is now critical care – Intelligent CISO, Published on Sunday, March 15
• Cyber security pros urge SA govt to prioritise digital security, skills development | ITWeb, Published on Wednesday, February 18