HP's email tracer in widespread use
The tracer software that Hewlett-Packard Co. investigators used to try to sniff out boardroom leaks sounded like it had been ripped from the pages of a bad science fiction novel until the company began talking about it in detail at a congressional probe into the spying scandal.
The technology tool the company used, called a Web bug, is designed to allow email senders to track the path a message takes, including whether a recipient opens the message and forwards it to another party. And it turns out the technology is widely used in email newsletters to track readers and also by law enforcement in investigations, security experts say. HP's e-mail tracer in widespread use
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