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Judas |
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Judas |
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Perl / Web Traffic Analysis |
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Click to Visit |
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58 |
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Judas is based on code developed for the CallerID script. Judas shows how an image could be used to log details about the users without them being aware. The test page contains a tag: . When the web browser tries to load this image, the script is called. The script returns an image, instead of an HTML document, which looks normal to the user. But the script has secretly logged information about them to a file. This script records information that is easily available but the technique is interesting.
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