Graduate / 'information security' - SOP review for PhD in Computer Science (USA) [4]

Need advice on SOP for information security in canada

HI.. frnds... please help me to write my SOP for 1 year post graduation in information security in canada...
The problem is i have done Btech , undergraduation in Electronics and Communication ... so im bit confused how to write sop for information security because i have done UG in ECE...

kindly help me frnds... with sample SOP for PG in information security for ECE student..
my project work is related to Electronics so if i write that in my SOP is there any problem????????? because it is not related to computer science???????????