which are the different method's by which cell phones and land phones are tapped?how it can be prevented?

Answer 1

Wireless bugs placed in the earpiece, any telephone extension in the house, anywhere along the telephone line or at the junction box outside the house. There can also be wired bugs as well that record onto a microchip or are being listened to at another location. Analog cell phones can be heard by anyone. The government can listen to any of your calls, digital or not, hardwired or not and without having to obtain a court order, thanks to the patriot act.

Answer 2

cell phones are tapped by intercepting the signal to and from the towers usually. this is nearly impossible to avoid unless you buy some rather exotic encryption device that i would not know anything about. land lines are typically tapped either at the phone itself or, more likely, at the switch on the telephone pole. im sure if the govt wanted to tap your phone they could now do it electronically with the assistance of the phone provider and there's nothing you could do.

Answer 3

Who are you worried about tapping your phone?

You can hear cell phone conversations on any police scanner, sometimes they interfere. If you're worried about your cell being tapped, use pre-paid phones and get a new one every couple weeks.

It's alot of work to tap a land line and I think they only do that if you could potentially get hardcore criminals/drug dealers or you are a hardcore criminal/drug dealer. Or you're hiding terrorists in your closet. Which just may be the case...