Getty Images / WIRED People are unknowingly doxxing themselves and leaking their own sensitive private information using a popular screenshot app that sends people’s grabs to the web. The URLs of scores of screenshots captured by the app are easily discoverable online, leaving them open to data scrapers and criminals. The Lightshot screen grabbing app, which is owned by software development firm Skillbrains, is used by millions of people to take and share images they capture on their computers and phones. After taking the screenshot, people have the option of uploading their image onto the company’s server with a publicly-accessible URL. Other choices include saving it to a desktop, or sharing directly to social media.