Could hackers turn the lights out?

Hackers have managed to develop new skills and experts warn about threats they impose to systems that control power stations, water treatment plants and even transport.

Just before Christmas, the theoretical threat became all too real for more than 225,000 Ukrainians who were plunged into darkness by a sophisticated attack on one of the nation's power companies.

Read More: http://www.bbc.com/news/technology-35204921

How far do you consider hacking might go in the future?

Which ways do you consider best to prevent hacking in major industries?