Gaining access to anyones Arc browser without them even visiting a website 2 years ago
This convinced me to never use Arc again. I created a small guide to migrate from it to an open-source alternative: https://gist.github.com/clouedoc/4acc8355782f394152d8ce19cea...
TL;DR: it's not possible to export data from Arc, but it's possible to copy-paste the folder to a Chrome profile, and Firefox and other browsers will detect&import it.