Google, Facebook, Amazon, and Apple are widely considered the kings of digital world. But as they look to grow further, increasingly they will need to target each other's turf, dramatically raising the stakes in cyber conflicts in 2013, reports the Wall Street Journal.
- Google. Perhaps the most wide-ranging of the giants, it's clashing more and more with rivals in telecommunications and cable TV. Thanks to its $12.5 billion purchase of Motorola, expect Google to expand in all aspects of Android and smartphones. (It also wants to take most of Microsoft's Office business, notes SlashGear.)