Ransomware Toolkit Found Inside South African Air Traffic Control Network
Air Traffic and Navigation Services (ATNS), the South African state company that manages air traffic and weather operations across roughly 10% of the world's airspace, has discovered malware linked to ransomware on an operational technology (OT) network — the specialised systems that control physical infrastructure rather than standard office IT, according to Dark Reading.
ATNS says its internal teams detected suspicious activity in systems supporting weather services for air traffic control and moved quickly to contain it. Preliminary analysis found malware consistent with the early stages of a ransomware attack, along with signs of data exfiltration (files being copied and sent out) to external IP addresses based in China.
Two incidents at two separate facilities are now under investigation. The OT compromise occurred at Port Elizabeth Airport in South Africa (FAPE). A second, distinct incident — possibly an insider theft of data — took place at Maputo International Airport in Mozambique (FAMM). These are geographically separate events at separate airports in two different countries. A third site, East London Airport in South Africa, may also have been caught up in the OT incident, though the documentation is unclear on that point.
ATNS is now seeking outside cyber-forensics firms to investigate, having publicly issued a request for quotes on 18 September. The company believes the attack was stopped before any disruption to flights occurred.
This is part of a broader trend. Ransomware attacks against aviation targets increased sixfold in 2025, according to aviation firm Thales.
What to do: If you work in or near critical infrastructure and receive unexpected prompts to open files or change credentials, escalate it immediately — do not assume it is routine.
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