Readable, if leaning a bit too heavily on police procedural. But.. There's some egrerously wrong stuff about computer security in here. I wouldn't care if it didn't turn out to be a lynchpin of the plot.

That left me at 3 stars, but then there's the reason I didn't get around to reading this book until now. The premise is pretty horrifying, and I don't much like horror. Turns out though, that the book avoids the existential horror angle entirely. Which made it readable for me, and is sort of nice, but in retrospect, the book needed at least one scene that acknowledged that, and without one, it's weak sauce. 2 stars.

(There was one scene in a scary interior space occupied by a very weird character that came almost close, and so was the most interesting scene in the book.)