With Zombies — Michael F. Stewart

The final book in the Assured Destruction Series!

Jan Rose may already be expunged from the police department's High Tech Crime Unit. Her mother's hospitalized, and Assured Destruction's on the cusp of bankruptcy. But Jan doesn't wait on anything, she seeks out the customers who used to keep the family business afloat. That's when everything starts to go wrong.

A computer virus--aka the Zombie Worm--threatens not only her school and Shadownet, but the entire city. A skull with a chain running through its socket links a powerful gang to her former customers, and holds the secrets to why her father left and the identity of her mother's boyfriend.

To save her family and the business, Jan must determine who is friend and who is foe. And decide what type of hacker she wishes to become: Gray, white, or black. Not only her life hangs in the balance.