DARKReading has posted a seven step tutorial for how to start using Shodan, a search engine for discovering Internet-connected devices, including industrial control system devices part of water and wastewater utilities’ networks. Shodan can be a powerful tool for security professionals as they seek to understand where parts of their networks are observable to outsiders, and potentially vulnerable to their attacks. WaterISAC has encouraged its members to identify areas of their OT networks that are publicly accessible, lest adversaries do this first. DARKReading.