“Are you Sure your Email isn’t being hacked?” outlines a clever ploy for trapping anyone who is covertly spying on your e-mail. The article lays out the details of e-mailing a hit counter to yourself disguised as something enticing, such as a list of passwords. If someone reads this booby-trapped e-mail, the hit counter records the date, time, location, IP address, referrer, and ISP.

Link via Lifehacker.