[Lynx-lynx]

Robert Harris, The Fear Index wasn't too bad. It's cyber crime based and not too incredulous.

Set in Geneva, it gets into the hedge fund business, but also has glimpses in ordinary society in Geneva. For example, the investigating officer can no longer afford to live in Switzerland so travels in from bordering France daily. (from memory).

PS: It's £2.49 at UK Amazon, so maybe similar in Germany if that's where you are.

Edit
Gerald Seymour has written a number of contemporary political thrillers. For example:
The Corporal's Wife

Spoiler:

A suspenseful and thrilling novel about a small British team of men sent into Iran to smuggle out the feisty, independent Farideh. If they are caught, they will all be executed by the fundamentalist government - the Brits because they are effectively spies, and Farideh because her husband is regarded as a traitor and she has a dangerous mind of her own.

Farideh's husband is a corporal in the Revolutionary Guard, entrapped by MI6 and held in a safe house in Austria for interrogation. His lowly position would not normally make him a target, but his job as a driver to a top general means that he knows the location of secret nuclear sites and has overheard many unguarded conversations.

But he won't talk unless Farideh is brought out of Iran. The SAS say it's too dangerous, but the director of the operation doesn't want to lose his prize. He assembles a little team of three ex-soldiers and one student drop-out who knows the language and smuggles them into Tehran.

The journey back out is an epic of drama and suspense, culminating in a never-to-be-forgotten run for the border. Along the way, we meet many characters, both British and Iranian, who display courage, cowardice, hatred, and love.

The Outsiders

Spoiler:

Winnie Monks has never forgotten - or forgiven - the death of a young agent on her team at the hands of a former Russian Army Major turned gangster. Now, years later, she hears the Major is travelling to a villa on the Costa del Sol and she asks permission to send in a surveillance unit.

They find an empty property near the Major's. The Villa Paraiso. It's perfect to spy from - and as a base for Winnie's darker, less official, plans.

But it turns out that the property isn't deserted. The owners have invited a young British couple to 'house sit' while they are away.

For Jonno and Posie, just embarking on a relationship, this is supposed to be a carefree break in the sun. But when the Secret Service team arrives in paradise, everything changes.

A Deniable Death

Spoiler:

A page-turning thriller of life and death in the moral maze of the post-9/11 world from the international bestselling author and “best spy novelist ever” (Philadelphia Inquirer)

The rules are simple. Break up your shape. Hide your smell. Never show your silhouette. Check the surfaces of your kit. Space the movements of your team. Use the shadows. Danny “Badger” Baxter has a talent for surveillance. He’s always followed the rules. Until now, they’ve kept him alive.

But now Badger has a bigger job than photographing dissident Northern Irish Republicans in muddy Ulster fields, or Islamic extremists on rainswept Yorkshire moors. MI6 have a plan to assassinate the Engineer—a brilliant maker of Improvised Explosive Devices, the roadside bombs which account for 80% of Allied casualties in Iraq and Afghanistan. The spooks know he’s planning to leave his home in Iran. They just need to find out when and where he’s traveling.

So Badger finds himself on the wrong side of the Iranian border, burdened with a partner he loathes, lying under a merciless sun in a mosquito-infested marsh, observing the house. If things go wrong, as far as Her Majesty's Government is concerned, his part in the plot is completely deniable. With A Deniable Death, Gerald Seymour expertly explores the moral compromises of the secret world upon which we rely for our everyday security - and the amazing reserves of courage which ordinary people can find in extraordinary circumstances.

The Journeyman Tailor

Spoiler:

HEAR NOTHING. SEE NOTHING. KNOW NOTHING. This is the ruthless motto in the Provisional IRA's most active brigade. To collaborate with British Intelligence means certain death. But there is a rumour that an informer is operating within the Brigade. When identified he will be ruthelssly interrogated, tortured, then shot. The MI5 agents running the informer must protect their man at all costs: he is their most critical asset, and they must keep him in place, even if that means innocent people must die

(I've got these books but have yet to read them )