The Jennifer Morgue: Book 2 in The Laundry Files - Charles Stross
I met Stross in a crypt in London several years ago. He was unknown to me as an author, so I brashly asked him what he'd written. He politely told me "quite a lot" and he suggested I start with Halting State. I've been a fan ever since.
I enjoyed the first book in this series - but I found this one a bit hard going.
The outdated tech is fun - in a retrotastic sort of way. The fact that it is suffused with an outdated male gaze is less so. It's a self-admitted James Bond knock-off, but it is basically a rehash of the first book.
I mostly love Stross's writing - Rule 34 can't be beat - but this was a rare exception.