Benefitmonkey - Maya Rose: - The French Connection

Maya Rose hadn’t slept in forty hours. She was in the back of a rented Fiat, somewhere between Aix-en-Provence and Marseille, clutching a stolen hard drive that felt warm as a heartbeat. Her phone screen glowed with the neon-green logo of —the app she’d built from a studio apartment in Austin, now a $47 billion “health-finance hybrid” that knew your cholesterol, your credit score, and your deepest anxiety about out-of-pocket maximums.

“I reverse-engineered their tracker’s audio driver. Every BenefitMonkey phone within two kilometers now believes it is a patriotic trombone.” He smiled, breadcrumbs in his beard. “This is what we call la révolution silencieuse —but with more brass.” BenefitMonkey - Maya Rose - The French Connection

He tapped a key. The Peugeots screeched to a halt. Their headlights flickered, then turned a violent shade of magenta. A moment later, both cars’ sound systems began blasting a brass-band version of “La Marseillaise” at maximum volume. Doors opened. Men in suits clutched their ears. One vomited into the dirt. Maya Rose hadn’t slept in forty hours

Here’s an interesting story based on your prompt. The Marseille Offset “I reverse-engineered their tracker’s audio driver