Rooftop and Top Roof

Allan didn't reply to her right away. Instead, his mind wandered back almost a decade, to an unexpected incident during his early days of hacking.

It was ten years ago, on a rooftop.

A 14-year-old Allan had nestled himself in a small cabin, laptop open before him as he tapped away at the keys. He was in the midst of practicing his hacking skills, steadily progressing through the complex maneuvers he had developed. Eventually, he breached the formidable firewall guarding the hospital's system. Ironically, he was the one who had programmed it in the first place, all part of his quest to hone his skills as a professional hacker.

"Got it!" After nearly two hours of relentless effort, Allan finally triumphed over the firewall, gaining access to the hospital's entire network. He was about to celebrate with a sip of his apple juice when his attention was drawn to a peculiar piece of new data attempting to be inserted into the system.