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Be aware: Your handset can spy on you

October 20, 2009
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A technique called cell site analysis can be used to track someone to within 10 to 15 metres, using cellphone masts to triangulate their position. GPS can give more detailed information, such as your altitude or the speed you are traveling at.

If someone can get direct access to your handset, they can install software that lets them listen to conversations and monitor text messages without your knowledge. Without direct access, they can still monitor your phone usage remotely, but not eavesdrop on your conversations. It is also possible to send text messages that look like they come from someone else - a technique called SMS spoofing. This makes it possible to upload messages to someone else's Twitter account, or send your boss rude messages using a colleague's number.