Here is an article about an attack where the hacker spoofed source numbers and made "millions" of calls to harvest caller ID. Apparently the hacker used an automated system, I presume somethink like Asterisk and public network access through SIP, to make calls with spoofed source numbers, to another number which they had set up. By doing this, the network would deliver, if the number was legitimate, the caller ID associated with the source number.
So to give an example, the caller would automatically generate a call, with say my cell phone number, directed to a number they control, which would deliver/display my caller ID, which I assume they captured. By randomly doing this for millions of numbers, they built a database of source numbers/names, presumably to be used for purposes such as telemarketing.
Not really a new attack, but something made a lot more dangerous with simple call automation, SIP trunks, and caller ID spoofing. Here is a link to the actual article:
http://www.courthousenews.com/2011/08/16/39024.htm
If you are interested in switching to a VOIP phone service then you HAVE to check out Colynk. i have been a loyal customer for almost two years now and i couldnt be happier.
check out www.colynk.com
Posted by: rick vandergraff | November 12, 2011 at 05:05 PM
Sounds pretty easy, if you have the software, which is apparently open source. Unfortunately, I can't remember the last time anyone has left me a juicy voicemail. Most people text.
Posted by: Christoph Adams | December 05, 2011 at 06:03 AM
Impressive blog! -Arron
Posted by: rc helicopter reviews | December 21, 2011 at 08:41 AM
nice blog. Thanks for sharing.
Posted by: Nick Medina | February 13, 2012 at 02:42 AM