While Facebook had a "Only Me" privacy setting for friends lists, the extension exploited a core feature: mutual friends. If you and a target profile had one mutual friend, the extension would use that to systematically scrape and reveal a significant portion of their complete friends list. Essentially, your carefully hidden list of connections wasn't as private as you thought, a "logical flaw" in Facebook's system at the time.
Since loopholes can occasionally emerge, you should optimize your privacy settings to keep your friend list secure: Click your in the top right of Facebook. Select Settings & Privacy , then click Settings . Click Privacy in the left menu. Look for the setting: "Who can see your friends list?" Change it to "Only Me" to maximize your privacy.
Because Facebook regularly updates its platform to close privacy loopholes, many older "Friend Mapper" extensions no longer function as intended in 2026. How to Use Such Tools (Conceptual Guide) Facebook Friend Mapper Extension Download
Given the numerous scams associated with keywords like "Facebook Friend Mapper," it's crucial to practice good security hygiene on social media:
The extension relied on a mathematical and logical loophole known as . While Facebook had a "Only Me" privacy setting
The extension operated on a simple logical flaw in Facebook's privacy settings. Even if a user set their friends list to "Only Me," the Mapper could bypass this by: Mutual Friend Exploitation : Requiring the attacker to have at least one mutual friend with the target. Graph Search Queries
After downloading, the extension would be installed in Chrome, often requiring a browser restart. Since loopholes can occasionally emerge, you should optimize
Note: While this stops people from viewing your full list, users can still see if they have mutual friends with you when visiting your profile. Summary: Avoid Social Media Scraping Tools
Click your in the top right corner of Facebook. Select Settings & Privacy , then click Settings .
The Facebook Friend Mapper extension no longer exists in any official capacity. It was completely shut down due to two major factors: 1. Facebook’s API Changes and Security Patches
For OSINT (Open Source Intelligence) researchers, private investigators, and curious users, it was a powerful tool for visualizing social graphs. Why the Extension Disappeared