
Head of the Rule 34 Squad monitoring the Internet for illegal activities, Detective Inspector Liz Kavanaugh investigates the link between three ex-con spammers who have been murdered.
Halting state might be a bit dated but rule 34 absolutely holds up.
Spoilers, but the basic gist is that an advanced anti-spam AI decides to tackle the problem at the source, so to speak. Recommended reading.
Also: read Rule 34 by Charles Stross. The weirdest thing about this book is that it's written in 2nd person.
Neptune's Brood by the same author is a science fiction book without any humans in it.
Halting State, Rule 34, and Glasshouse by Stross might also be up your alley.
And Blue Remembered Earth by Alistair Reynolds but probably not the sequels.
Oh, and Nexus by Ramez Naam.
I'd certainly recommend Ken MacLeod in general but I'm not sure he's exactly what you're asking for unless you're also interested in examinations of radical political philosophy.