alt Hacker NewsThis isn't an exercise in cataloging all worldly items. The criteria for the list is very obviously:
[no legitimate purpose] + [identified as a potential threat or disturbance vector] + [described in a way useful for laypeople who will be consuming said list]
The fact that these items were thought to satisfy your item number two, while more dangerous items did not, indicates that someone's feeding bad information to security, or alternatively, that was not the criteria. There is also some indication of Mr. Robot style fantasies about the power of individual computers.