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Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?

To: Art Bechhoefer who wrote (581)	9/20/2001 7:49:28 PM
From: Hawkmoon	Read Replies (2) \| Respond to of 281500

Art... trust me on this.. If you make a call via their system, they can monitor that call without you even knowing it. Digital transmissions are essentially data packets with destination and source address representing the phone numbers you're using. If you know the phone number of the party using the cellular system, they can "sniff" on your connection, capturing a copy of your transmission, much in a similar way that it can be done on a network segment for Ethernet. Thus, each antenna segment acts like a router, directing the packets to their destination. This means that they should be able to intercept and record data packets being sent via that tower. Remember... each data packet should have a source and destination number... If they have that, they know what data packets to screen for. Encryption would be the only means that I would know of to prevent access to the conversation. They could intercept the packets because of the source and destination headers, but they would then have reassemble those packets and crack them. That is, if I understand CDMA correctly. howstuffworks.com howstuffworks.com Hawkmoon