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Two US lawmakers have called on the Federal Trade Commission to investigate the use of “supercookies” that secretly log web visitors' browsing histories across multiple sites, even when the users delete browser cookies to elude tracking.
In a letter sent Tuesday to FTC Chairman Jon Leibowitz, the co-chairs of the Congressional Bi-Partisan Privacy Caucus Edward Markey and Joe Barton said they believed a probe of supercookies falls within the consumer watchdog's mandate of protecting Americans from unfair and deceptive acts.
The letter follows revelations that hundreds of websites, including Microsoft's MSN.com, Hulu.com, Spotify, and GigaOm have deployed sneaky code that reconstructs browsing-history cookies even after users have taken the trouble to delete them.
