[haggy]

That idea has been floating around a lot. It's definitely not outside the realm of possibility, though what makes me think is was human error is the fact that Columbia Gas (company responsible for those lines) publicly announced work on the lines about a week before this happened.

[draxofavalon]

I could also be that a week before the hack started. I know that my line of thinking is very "Mr Robot". Let's hope it's not a hack and it's just human error.