```
In the 21st century, Yawgmoth, as the most outstanding biologist, often had to instill a concept into the leaders of different countries—virus mutation and transmission are uncontrollable, and any bioweapon based on viruses would risk affecting all of humanity and even multiple species, accelerating their extinction.
Similarly, no matter how skilled a hacker is, they can almost never precisely control the spread of the malicious software they create.
Unless... the target's online defenses are sufficiently robust, so you physically approach the opposing device and insert a USB drive with malicious code. This method could be considered "controllable."
Some malicious software is even designed to spread extensively.
Even to this day, Zhu Xinyu may still not know how many people have downloaded the malicious programs she created.
Among these programs, a few psychological self-assessment programs, including the Five Stops of the Mind Contemplation, are particularly special.