What is 2G, 3G, 4G?

Introduction With all the recent fuss over 4G / LTE.  Pentura thought a nice blog post highlighting the changes and developments of mobile infrastructure would be interesting for our readers.  Below is a high-level description of the 2G, 3G, 3G-Femto and finally 4G networks. 2G 2G (GSM/GPRS) is the initial backbone for all mobile infrastructure.  At the front end it comprises of a Radio Tower (BTS) , and the Base…

IMSI Catchers

An IMSI catcher is essentially a false mobile tower acting between the target mobile phone(s) and the service providers real towers. As such it is considered a Man-in-The-Middle (MiTM) attack. It is used as an eavesdropping device used for interception and tracking of cellular phones and usually is undetectable for the users of mobile phones. With the recent wave of femto cell technology  available to the general public; Hackers are turning these useful devices…