Cybersecurity

Triton is the world’s most murderous malware, and it’s spreading

As an experienced cyber first responder, Julian Gutmanis had been called plenty of times before to help companies deal with the fallout from cyberattacks. But when the Australian security consultant was summoned to a petrochemical plant in Saudi Arabia in the summer of 2017, what he found made his blood run cold.

The hackers had deployed malicious software, or malware, that let them take over the plant’s safety instrumented systems. These physical controllers and their associated software are the last line of defense against life-threatening disasters. They are supposed to kick in if they detect dangerous conditions, returning processes to safe levels or shutting them down altogether by triggering things like shutoff valves and pressure-release mechanisms.

The malware made it possible to take over these systems remotely. Had the intruders disabled or tampered with them, and then used other software to make equipment at the plant malfunction, the consequences could have been catastrophic. Fortunately, a flaw in the code gave the hackers away before they could do any harm. It triggered a response from a safety system in June 2017, which brought the plant to a halt. Then in August, several more systems were tripped, causing another shutdown.