Web Hack List

Other nomination

Detecting Privoxy Users and Circumventing It

Privoxy replaces a blocked ad with an error page offering a predictable modified URL that bypasses the block. Requesting an image at that reconstructed URL, placed after a keyword Privoxy filters, reveals whether the visitor runs Privoxy and hence probably TOR. A test script is published; the author expects it to outlive the chrome:// trick.

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