Facebook hosts its images on high-speed Content Delivery Networks (CDNs). Historically, early iterations of social media suffered from "URL guessing," where an image URL was predictable (e.g., site.com/imageID.jpg ). However, modern Facebook image URLs are appended with temporary, expiring access tokens (e.g., fbcdn.net/image.jpg?oh=12345&oe=67890 ).

If you'd like, I can give you a on how to check your own privacy settings. Would that be helpful?

If you have shared connections, you might find photos of the user posted by friends who are not on private.

Consequences can include account suspension, permanent banning from Facebook platforms, and in extreme cases, legal prosecution.

Note: This only works for the profile picture and not private albums. 🔒 How to Secure Your Own Profile