He turned to the window. Across the street, a man in a dark grey suit was holding a laptop, staring directly up at his apartment. The man wasn't moving. He wasn't blinking. He was simply waiting for Elias to realize that proQ.7z.002 wasn't a file he had found—it was a beacon he had just activated.
He knew immediately what the extension meant. It was the second volume of a split 7-Zip archive. By itself, it was useless. You could stare at the hex code for a century and see nothing but noise. To see the contents, he needed proQ.7z.001 . proQ.7z.002
It had arrived in an anonymous upload to his secure server at 3:14 AM. No sender address, no metadata, just 2.4 gigabytes of encrypted, compressed data. Elias was a "digital archeologist"—he recovered data from dying drives and cracked forgotten containers—but this was different. He turned to the window