Rand Water: Confirms Cyber Attack in South Africa, Water Supply Safe

• Rand Water, Africa's largest bulk water utility, experienced a cyber security incident that infiltrated its network and damaged some servers.
• Despite the breach, critical operational activities, including water treatment and supply, remain fully functional due to the activation of a disaster recovery site.
• The incident was identified by IT staff at night, but not before some servers were compromised.
• Experts suggest the attack was malicious and aimed at system disruption, rather than ransomware.
• The incident reflects a growing global trend of cyber attacks targeting water and energy utilities.

The successful activation of Rand Water's disaster recovery site in Centurion proved instrumental in mitigating the impact of the cyber attack, preventing a more widespread disruption.

Africa's largest bulk water utility, Rand Water, recently confirmed a significant cyber security incident that compromised certain information technology systems within its network. The utility, which supplies water to over 16 million people across Gauteng and parts of the Free State, North West, and Mpumalanga, disclosed the breach on the JSE's Stock Exchange News Service. According to Lucky Ncobela, Rand Water's Acting Group Chief Financial Officer, the infiltration occurred under the cover of darkness, with hackers gaining access to some servers.

Rand Water's IT personnel detected an "intruder" tapping into their system during the night. Although immediate attempts were made to block the intrusion, it was unfortunately too late to prevent damage to several servers. In response, the utility swiftly activated its disaster recovery protocols, transitioning its operations to a dedicated disaster recovery site located in Centurion. This strategic move was crucial in maintaining business continuity and preventing the spread of the malicious software throughout its infrastructure.

Despite the network breach, Rand Water has assured the public that all critical operational activities remain fully functional. This includes essential water treatment processes, stringent water quality control systems, and the vital bulk water supply operations. The utility continues to rigorously monitor and test water quality, affirming that drinking water remains safe and meets all required standards. Furthermore, the transactional aspects of the business were unaffected, as the treasury unit already operated remotely.

The incident is currently under active investigation and management, with support from both internal and external cybersecurity specialists. Alistair Pugin, founder of cloud technology enabler @Celyntis, suggested that the attack appears to have been driven by malicious intent to disrupt systems rather than being a ransomware demand. This assessment aligns with a growing global trend where critical infrastructure, particularly water and energy entities, are increasingly becoming targets for cyber adversaries.

Rand Water's Acting Group Chief Financial Officer, Lucky Ncobela, acknowledged this heightened threat landscape, noting that hackers are targeting energy and water utilities with increasing frequency. He posited that Rand Water, as the continent's largest water board, was likely singled out due to its prominence. International reports underscore this concern; the Federal Bureau of Investigation (FBI) previously highlighted that malicious cyber actors are targeting internet-facing programmable logic controllers (PLCs) in the water and wastewater sector, leading to operational disruptions.

The US Cyber Security and Infrastructure Security Agency (CISA) has also warned that "threat actors are targeting water entities of all sizes." William Akoto, an assistant professor of global security at the American University School of International Service, detailed attempts by hackers to infiltrate at least 30 municipal water systems in Minnesota between July 26 and 27, 2026, with similar incidents reported in Michigan, New Jersey, and other states. Notably, these attacks often bypass traditional office computers, instead aiming to seize control of equipment like pumps and valves that directly manage water delivery. An August 2021 paper in the International Journal of Water Resources Development documented 20 known cyber attacks on water utilities, illustrating the persistent nature of this threat.

The successful activation of Rand Water's disaster recovery site in Centurion proved instrumental in mitigating the impact of the cyber attack, preventing a more widespread disruption. This highlights the indispensable role of robust disaster recovery plans and resilient IT infrastructure for organizations managing critical services. The ability to swiftly switch to a backup system ensured that essential water supply and quality control functions continued uninterrupted, safeguarding public health and welfare for millions of South Africans.

This Rand Water network breach serves as a stark reminder of the escalating cyber threats facing South Africa's critical infrastructure. The incident underscores the urgent need for all essential service providers to continuously review and strengthen their cyber security frameworks, enhance incident response capabilities, and invest in advanced threat detection and prevention technologies. Proactive measures are paramount to protect vital systems from increasingly sophisticated attacks, ensuring operational continuity and maintaining public trust.

This incident underscores the critical importance for South African companies, particularly those in essential services, to review and strengthen their cybersecurity frameworks, incident response plans, and disaster recovery protocols to mitigate legal and operational risks from increasingly sophisticated cyber threats. Lawyers should advise clients on potential POPIA implications if personal data was compromised and the need for robust cyber resilience strategies.

Source: Original reporting via ITWeb