On 2/3/06, coderman <coderman@gmail.com> wrote:
... the Cirpack switching system Vodafone uses is commonly available (to those steeped in EU telco at least). [see http://www.cirpack.com/products/hvs.shtml ]
i stand corrected. media reports have indicated Ericsson Mobile Softswitch was the software in question: http://www.ericsson.com/products/hp/Mobile_Core_pa.shtml pretty much any softswitch technology is vulnerable to this type of attack. see also: http://en.wikipedia.org/wiki/Softswitch , although some of this description is a bit misleading or applies to a particular architecture. note that some carriers, like Sprint, build their own softswitching systems in house. presumably these would be more resistant to tampering as the detailed information required to mount such an attack is protected via trade secret and non disclosure.