How to clone a sim

UMany of my friends asked me abt the cloning of sim , i mostely refused them by telling that its illigal bt somtymes it can be a weapon of survoing so m presenting selftested method for that.
Plz write me if its not working...
How to clone sim card.
By cloning sim card , you can spy on victims call
and messages. So it will help you in Hacking.
.Requirements
1) Blank sim card available online as well as
offline.
2)A Sim card frimware writer (online as well as off
market)
3) woron scaner ( search it on google )
4) Sim emulator ( search it on google)
5)victims sim for 20minsSo here we start.
1- Plug victims sim and install woron scaner,
configure it and search IMSI number then search
ICC number and at last search KI number. Note
down this number.
2- Now remove victims sim. And insert blank sim.
3-Open sim emu , click on configurations tag and
enter IMSI ICC and Ki number of victim sim. The
number you enter should be in (country code)(10
digit number) format. Now click on Write to disc
button, a write EEPROM window will appear, name
it as supersim.HEX and save it.
4-Now run the writing task and click on done when
it is complete. So here we complete cloning
Note: COMP128V1 and V2 are cloneable. If it take
more then 45 min to scan KI number then it is not
cloneable
Note :- this tut is only for educational purpose this method is 100% safe and tasted