In the of our story we covered the history of SIM cards. Now let us get down to their security. One of the first vulnerabilities in SIM cards that was ever discovered.
![Comp128v2 Clone Software Comp128v2 Clone Software](http://3.bp.blogspot.com/-PmeU3c_ucz4/UW2lucZDp8I/AAAAAAAAAaw/dYEX6ah5q3E/s400/clone+2.jpg)
** There are Special considerations & Not All SIMs available, can be cloned. You Need Special Hardware. NOT the ordinarily available SIM Reader/Writer. These 'Writers' can ONLY insert SMS & Contacts.
Nothing Beyond That. The Hardware should be able to write to the EEPROM (or Programmable Memory) of the SIM. TYPE OF SIM: Even though ALL Sims may look alike, the Software (Or in Technical terms: the EEPROM) has evolved (though Slowly) over the years. Reason: Better Reception like 3G & to thwart the efforts of Hackers & Cloners. COMP128V1: These are the Oldest.
Commonly available till June 2002, they have little protection. These are the ONLY SIMs that can be Cloned.
Hence, if you have a SIM LATER than 2002, STOP Reading ahead. (I know you Won't, hence..) COMP128v2: These are the successors to the COMP128V1 Cards. These too, are being gradually replaced by newer variation card known as 3G Cards. How to differentiate V1 & V2 Cards: If Phone book capacity is more than 250 entries, most likely are COMP128v2 SIM cards If the Card does not Yield the 1st Set of KI No. Series even after 1 Hour, then it is a COMP128v2 Card (Will explain later in the tutorial). CARRIER LOCKED/PRE-PROGRAMMED SIM: These are the SIMs that are handed-out to us users, i.e End-User. ALL our current Phones have these SIMs, Actually these are a sub-category of the above 2 Types of SIM.
However, these are ALREADY PROGRAMMED & you cannot 'Write' ANY Data (Clone) ON THIS SIM. I am writing this coz, people might be thinking: I have a SIM which I do not use, let me Clone my other SIM onto this one.Well. Now click on 'Ki Search'. Now the program hacks the SIM and retrieves the the KI value which consists of 32 numbers. Note that it may take up to 8 hrs to completely get the KI value.
No matter how much faster the PC is. This is because the SIM is only capable of receiving and sending data@9600 bits/sec. Wait Patiently & Do not touch the PC. If, by the end of 1 Hour, even the first set is NOT Found, then STOP the SCAN. This happens when you have a COMP128v2 & beyond card which have tougher protection & are not h*a*c*a*k*a*b*l*e YET.