Watch Dragon Day (2013) Official Trailer

The hack is the attack.

When Duke Evans, an out of work NSA analyst, is evicted from his home he moves his family to his grandfather's old cabin. However here they are also threatened when a hellish cyber-attack is unleashed on the US rendering anything with a computer chip useless. He must now keep his family alive, fight off would-be thieves and a newly corrupted government, and ultimately make the hardest decision of his life- to survive.