“By day, Angie, a twenty-year veteran of the tech industry, is a data analyst at Tomo (think Facebook), the world’s largest social networking company; by night, she exploits her database access to profile domestic abusers and kill the worst of them. […] When Tomo introduces a deceptive new product that preys on users’ fears to drive up its own revenue, Angie sees Tomo for what it really is–another evil abuser. Using her coding and hacking expertise, she decides to destroy Tomo by building a new social network that is completely distributed, compartmentalized, and unstoppable. If she succeeds, it will be the end of all centralized power in the Internet.”

Kill Process by William Hertling

This is one of the geekier/techy novels I’ve read in awhile. The author went to great pains to get the hacker stuff right. (Or right-ish)