Caller ID spoofing is a new and great way to protect you and your family's privacy against all kinds of phone harassment. Caller ID spoofing services provide you anonymity. This means that you wouldn't have to give away your real phone number every time you make a call. Call spoofing is using a "dummy caller ID" chosen by you that appears on the called persons phone display. This way the caller ID spoofing service disguises your caller ID, keeping your privacy.
The security of this service is improved by the fact that caller ID spoofing uses VOIP technology. VOIP stands for Voice Over Internet Protocol and it allows phone calls over an Internet connection. So, caller ID spoofing using VOIP simply transfers calls from the telephone carrier to the Internet, using a private secured channel. This is why call spoofing is safer.
Caller ID spoofing appeared in 2003 and was marketed for law enforcement and private investigators. Call spoofing is used by private investigators for what, in their business, is known as "pretext calling". A pretext call is one in which investigators solicit information over the phone under a shifty pretense. We know that caller ID spoofing has helped investigators solve many cases using this method.
Nowadays this service is avaible for everybody. Caller ID spoofing and call spoofing have created many controversies about the legality of these services. It is true that some could use call spoofing to make pranks and jokes to their friends and in this way harass them. But this kind of manifestation is harmless and those people that criticize the caller ID spoofing service have to admit that this service is the only way someone could protect his real phone number, and with it, his privacy.