Which tool is used to search for internet-connected industrial control systems (ICS)?

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Multiple Choice

Which tool is used to search for internet-connected industrial control systems (ICS)?

Explanation:
Searching for internet-facing industrial control systems relies on a tool that catalogs devices and the services they expose on the internet. Shodan is designed for this purpose: it scans, indexes, and tags devices by the services they run, including industrial control system protocols and banners. Because ICS often exposes specific protocols like Modbus, DNP3, Siemens S7, and OPC UA, Shodan’s filters and banners make it easy to locate those devices across the internet. While other search engines can find internet-connected devices, Shodan has the strongest association with ICS discovery due to its dataset and ICS-focused search capabilities.

Searching for internet-facing industrial control systems relies on a tool that catalogs devices and the services they expose on the internet. Shodan is designed for this purpose: it scans, indexes, and tags devices by the services they run, including industrial control system protocols and banners. Because ICS often exposes specific protocols like Modbus, DNP3, Siemens S7, and OPC UA, Shodan’s filters and banners make it easy to locate those devices across the internet. While other search engines can find internet-connected devices, Shodan has the strongest association with ICS discovery due to its dataset and ICS-focused search capabilities.

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