Facebook utilises data from third-party websites in addition to information about your behaviour on Facebook and its connected products, such as Instagram, to target you with advertisements. With the launch of a new tool, Facebook is now allowing users to see precisely which third-party applications and websites share their data with Facebook. A toggle is also provided in the tool to turn this off. To use the new function, go to Facebook.com's top right corner, tap the down-pointing arrow, and choose settings. If you are using a mobile device, open the Facebook app and hit the three-line symbol in the bottom-right corner. Scroll down and select ‘Settings & Privacy,’ then select ‘Settings.’ • Select the header ‘Your Facebook Information.’ It is located at the top of the left column on the desktop. • On the page, click the heading ‘Off-Facebook Activity.’ · Select ‘Manage Your Off-Facebook Activity’ next. You will be prompted to enter your F