A popular online animation tool has been abused to trick people into handing over access to their cryptocurrency wallets, with at least one person losing nearly $700,000.

LottieFiles is a platform that provides tools and a library for creating, editing and sharing lightweight and scalable animations in Lottie format. These animations, along with the LottiePlayer plugin, are commonly used in websites and mobile apps with 94,000 weekly downloads and have been downloaded over 4 million times since launch.