Now that you know how limited anonymous viewing is, it's equally important to understand how to protect yourself. If you are a Facebook user who wants to ensure strangers and anonymous browsers cannot access your information, follow these steps:
Facebook employs robust, multi-layered security protocols to protect user data. The platform’s servers require authentication (a valid login token) to fetch and display user data. An external website or link cannot simply bypass this authentication layer. facebook profile viewer no account link