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The contest, organized by Trend Micro’s Zero Day Initiative (ZDI), saw 11 contestants demonstrating their exploits in the OPC UA Server, Control Server, Human Machine Interface, and Data Gateway categories.

At Pwn2Own, the stakes are a little bit lower, but the systems are the same as what you’ll find in the real world. This week in Miami, the targets were all industrial control systems that run critical facilities.

The newly published Cyber Risk Index, a study by Trend Micro and the Ponemon Institute, shows that more than three-quarters of global organizations expect to suffer a cyberattack in the next 12 months — 25% of which say an attack is "very likely."

“We observed active exploitation of Spring4Shell wherein malicious actors were able to weaponize and execute the Mirai botnet malware on vulnerable servers, specifically in the Singapore region,” said Deep Patel, Nitesh Surana and Ashish Verma, security researchers with Trend Micro, in a Friday analysis.

"We observed active exploitation of Spring4Shell wherein malicious actors were able to weaponize and execute the Mirai botnet malware on vulnerable servers, specifically in the Singapore region," said Trend Micro's researchers.