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Facebook ad blocker safeguards limit political transparency campaigns
Facebook's efforts to protect user data are creating some headaches for attempts to improve accountability for political ads. The Guardian has learned that at least a few political ad transparency campaigns, including those from ProPublica and WhoTargetsMe, have lost some of their ability to monitor Facebook ads. The social network has been clamping down on web plugins like ad blockers that could potentially swipe data, and its changes have broken the functionality of research tools that need the info to show where ads are really coming from.
