Even if your list is hidden, a friend with a public list can still expose your connection. Encourage close friends and family members to change their friend list visibility to "Friends" or "Only Me" to secure the entire social circle. Step 3: Audit Authorized Apps

| Tool | Primary Function | Data Handling | | :--- | :--- | :--- | | | Matches CSV data to Facebook profiles. | Developer declares data not sold to third parties. | | Friend Exporter | Exports friends list of a user. | Claims all data remains on the local device. | | Lost Circles | Visualizes your own friend network. | Unclear; use at your own risk. |