This article is from The Prepper Journal.  Make sure you check out their wbsite for LOTS of great tips, techniques...

Prepping for a cyber attack is not that different from prepping for other types of disasters that affect the grid. You want to be able to operate independently of public utilities, stores, or public transportation.

We don’t want to be alarmist, but there is a very high likelihood that we will see a level of cyber warfare in the days and weeks ahead. This is no more true than it is today, so START TODAY.

"The art of war teaches us to rely not on the likelihood of the enemy's not coming, but on our own readiness to receive him; not on the chance of his not attacking, but rather on the fact that we have made our position unassailable."

- Sun Tzu