Facebook begins tracking non-users around the internet | The Verge
Facebook is already known for not respecting privacy. They now announced: “[…] we’re expanding Audience Network so publishers and developers can show better ads to everyone — including those who don’t use or aren’t connected to Facebook.” This basically means that they now track every user who gets in touch with some Facebook tracking technology (cookies, web storage, embedded fb-scripts, etc.) without asking. For Firefox, I added the Self-Destructing Cookies extension in addition to my Canvas Blocker and uBlock Origin to browse more safely. But remember that an open Facebook tab still might track you on other sites, so the browser’s private mode seems more appropriate.