Cybersecurity Fellow Jonathan Mayer exposes how personal information is being leaked to third-party trackers on presidential campaign websites, despite official claims that tracking is anonymous. He finds that the Obama and Romney campaigns are leaking names, addresses and partial e-mail addresses to third parties, such as companies and businesses eager for personal consumer information. Mayer has found that more than half of popular websites leak personal information, most often by adding the details to a URL or title, which is then tracked by third parties.