“Third-party cookies,” he murmured, brushing off a tin labeled Summer 2019 – Travel Plans . His grandmother, Elara, a retired librarian who’d been gone three years, had left him the house. And apparently, a meticulous record of every ad she’d ever been served.

It was already on.

“That’s the day Apple released Safari 13.1,” Tess said. “Complete block on all third-party cookies by default. No opt-out trickery. No ‘legitimate interest’ loophole. That cookie tried to track her from a travel blog to a flight comparison site, and Safari just… erased its path. Like cutting a bridge.”

Silas spun around. A woman in a gray hoodie stood there, holding a tablet. Her name tag read Tess – Web Integrity Engineer, Apple . “I’ve been monitoring the residual packets. Your grandmother was… meticulous. She never deleted anything.”