The Rule of Thoughts by James Dashner

Michael completed the Path. What he found at the end turned everything he’d ever known about his life—and the world—completely upside down.

He barely survived. But it was the only way VirtNet Security knew to find the cyber-terrorist Kaine—and to make the Sleep safe for gamers once again. And, the truth Michael discovered about Kaine is more complex than they anticipated and more terrifying than even the worst of their fears.

Kaine is a tangent, a computer program that has become sentient… Read more.