A paper titled “I Know Why You Went to the Clinic” forecasts how privacy on the Internet may erode. The paper will be presented July 16 at the Privacy-Enhancing Technology Forum in Amsterdam. The data is unreadable, but the researchers developed a traffic analysis attack that makes it possible to identify what pages a person has browsed with about 80 percent accuracy. They evaluated the effectiveness of the attack using 6,000 web pages within 10 websites: the Mayo Clinic, Planned Parenthood, Kaiser Permanente, Wells Fargo, Bank of America, Vanguard, the ACLU.”]