Security Wipe in simple words means formatting your phone. You could format your phones for many reason including slowing down of phone, restoring phone to factory settings etc.
So let us see how to Security wipe a blackberry phone.
1.Use the Blackberry Desktop Manager and backup all your data.
2.Press the Blackberry key and go to options.
3.Then in options go to security options
4.In security options go to security wipe and then follow the on screen instructions.
Round up: Blackberry button–>options–>security options–>security wipe.
I hope this method of security wipe helped you solve your Blackberry phone problems.