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Сниффинг истории посещений через чтение ‘visited’ стиля ссылок и через Cache timing
Several browsers give you the option to select a privacy option that supposedly lets you surf the Web without leaving fingerprints. Don't believe it.
Сниффинг истории посещений через чтение ‘visited’ стиля ссылок и через Cache timing
Several browsers give you the option to select a privacy option that supposedly lets you surf the Web without leaving fingerprints. Don't believe it.
That option generally stops the browser from storing the URLs of pages you've visited in a pull down under the browser bar or recently visited tab. But it does nothing to conceal the pages and images you've viewed from advertisers who want to serve tailored ads to you, or even worse, from assorted snoops including private detectives and law enforcement agents.
The old solution, simply deleting cookies or clicking a setting that keeps your browser from accepting them, is much less effective than it used to be. That's because many Web sites are now using something called a "Flash cookie," which is maintained by the Adobe Flash plug-in on behalf of Flash applications embedded in Web pages, says Peter Eckersley a researcher with the Electronic Frontier Foundation.
Unlike standard cookies, flash cookies and a variation known as a supercookie are stored outside of the browser's control and users cannot view or directly delete them and they never expire. Flash cookies can track users in all the ways traditionally HTTP cookies do, and can be stored or retrieved whenever a user accesses a page containing a Flash application, says Eckersley.
