Wikipedia page about this book: https://en.wikipedia.org/wiki/Little_Brother_(Doctorow_novel)

Release date is 2009-09-30

"Little Brother" by Cory Doctorow is a novel published in 2008. When a terrorist attack strikes San Francisco, four teenagers find themselves detained by the Department of Homeland Security. Released but under surveillance, seventeen-year-old hacker Marcus Yallow refuses to accept the government's erosion of civil liberties. He creates Xnet, a secret network to fight back against the surveillance state, transforming from suspect to resistance leader in a battle over freedom and security. (This is an automatically generated summary.)

Original publication data not identified