Partly due to “open-source intelligence (OSINT)”:
In 2014 (Eliot) Higgins used Kickstarter to found Bellingcat (the name refers to resourceful mice tying a bell to a cat), a nonprofit, online collective dedicated to “a new field, one that connects journalism and rights advocacy and crime investigation.” Three days after its launch, a Malaysian passenger jet was shot down over the part of Ukraine held by Russian troops. Bellingcat proved the culprit was a Russian surface-to-air missile, by using largely the same array of tools—including Google Earth, the social media posts of Russian soldiers, and the passion of Eastern European drivers for posting dashcam videos—that hundreds of volunteer sleuths are now using to document the Russian invasion of Ukraine in granular detail….
In Ukraine, Russia has been outflanked. Its attempts to establish a pretext for invasion by circulating video evidence of purported “atrocities” by Ukraine were exposed as frauds within hours by Bellingcat, fellow OSINT volunteers, and legacy news media outlets that have picked up reporting tools the open-source crowd hands around.
https://time.com/6155869/bellingcat-eliot-higgins-ukraine-open-source-intelligence/. About 3,500 words.