"More than nine months into the Russian invasion of Ukraine, the online methods for tracking this war are many and proliferating, including the most obvious source of all — social media networks. A 2019 law designed to keep its military from posting on social media has not deterred Russian servicemen from sharing images and updates from the frontline, not least on Telegram and the Russian social network VKontakte, potentially allowing anyone with an Internet connection to pinpoint the place, time, and sometimes individuals seen in footage of military movements. Open-source investigations (OSI), popularly and misleadingly known as open-source intelligence, is not synonymous with social media, however. OSI is any information that can be publicly accessed by others, including but not limited to online sources. That includes everything from local newspapers to satellite imagery and images shared on TripAdvisor. What it doesn’t include are two mainstays of traditional investigative journalism — non-public document leaks or closed-source reporting, otherwise known as shoe-leather reporting and interviews. Over the past few years, newsrooms have started integrating open-source methods into their coverage and building their own OSI teams. That’s in part to verify social media posts, and in part to report on places where it is simply too dangerous for journalists to venture — areas on or behind the frontlines — where open-source imagery allows a glimpse into military movements and potential war crimes. Since Russia’s invasion of Ukraine, open-source investigations have surged in prominence and the genre as a whole has attracted scrutiny, not least from state actors themselves." (Introduction)