In short, the man was saying “I know everything.” “…I thought I’d discreetly covered my tracks to not leave any evidence,” Kousaka said with resignation. “I’m just asking out of pure curiosity, but how in the world did you determine the author of malware that hasn’t caused any damage yet?” “No obligation to tell you that.” He’s right about that, Kousaka thought. No one would purposefully show their hand in this situation. “But,” the man continued, “I’ll tell you just for the sake of your puny pride. It’s true, you’re a pretty tough customer in the virtual world. I’ll admit that much. But on the other hand, you’re totally defenseless in the real world. …You should get what I’m saying from that alone, right?” Something cold ran down Kousaka’s spine. Thinking about it, for the past few months, he left at a set time and weekday every week to go shopping, and during that time, the house was left empty. And when the weather was good, he kept the curtains open all day (he had a powerful belief in the bacteria-killing effect of sunlight). So if someone felt like it, it wasn’t impossible to peer into his personal life - to be concrete, someone could sneak into his room, or peek through a telescope. “And to answer your earlier question,” the man appended,