Blue Ant series by William Gibson (Books #1 thru #3)

Pattern Recognition (Blue Ant #1)
Cayce Pollard is an expensive, spookily intuitive market-research consultant. In London on a job, she is offered a secret assignment: to investigate some intriguing snippets of video that have been appearing on the Internet. An entire subculture of people is obsessed with these bits of footage, and anybody who can create that kind of brand loyalty would be a gold mine for Cayce's client. But when her borrowed apartment is burgled and her computer hacked, she realizes there's more to this project than she had expected.
Still, Cayce is her father's daughter, and the danger makes her stubborn. Win Pollard, ex-security expert, probably ex-CIA, took a taxi in the direction of the World Trade Center on September 11 one year ago, and is presumed dead. Win taught Cayce a bit about the way agents work. She is still numb at his loss, and, as much for him as for any other reason, she refuses to give up this newly weird job, which will take her to Tokyo and on to Russia. With help and betrayal from equally unlikely quarters, Cayce will follow the trail of the mysterious film to its source, and in the process will learn something about her father's life and death.

Spook Country (Blue Ant #2)
Tito is in his early twenties. Born in Cuba, he speaks fluent Russian, lives in one room in a NoLita warehouse, and does delicate jobs involving information transfer.
Hollis Henry is an investigative journalist, on assignment from a magazine called Node. Node doesn't exist yet, which is fine; she's used to that. But it seems to be actively blocking the kind of buzz that magazines normally cultivate before they start up. Really actively blocking it. It's odd, even a little scary, if Hollis lets herself think about it much. Which she doesn't; she can't afford to.
Milgrim is a junkie. A high-end junkie, hooked on prescription antianxiety drugs. Milgrim figures he wouldn't survive twenty-four hours if Brown, the mystery man who saved him from a misunderstanding with his dealer, ever stopped supplying those little bubble packs. What exactly Brown is up to Milgrim can't say, but it seems to be military in nature. At least, Milgrim's very nuanced Russian would seem to be a big part of it, as would breaking into locked rooms.
Bobby Chombo is a "producer," and an enigma. In his day job, Bobby is a troubleshooter for manufacturers of military navigation equipment. He refuses to sleep in the same place twice. He meets no one. Hollis Henry has been told to find him.

Zero History (Blue Ant #3)
When she sang for The Curfew, Hollis Henry's face was known worldwide. She still runs into people who remember the poster. Unfortunately, in the post-crash economy, cult memorabilia doesn't pay the rent, and right now she's a journalist in need of a job. The last person she wants to work for is Hubertus Bigend, twisted genius of global marketing; but there's no way to tell an entity like Bigend that you want nothing more to do with him. That simply brings you more firmly to his attention.
Milgrim is clean, drug-free for the first time in a decade. It took eight months in a clinic in Basel. Fifteen complete changes of his blood. Bigend paid for all that. Milgrim's idiomatic Russian is superb, and he notices things. Meanwhile no one notices Milgrim. That makes him worth every penny, though it cost Bigend more than his cartel-grade custom-armored truck.
The culture of the military has trickled down to the street- Bigend knows that, and he'll find a way to take a cut. What surprises him though is that someone else seems to be on top of that situation in a way that Bigend associates only with himself. Bigend loves staring into the abyss of the global market; he's just not used to it staring back.