Your NPCs can now develop an exploit for an operating system. This is a difficult task requiring InfoSec theoretical and practical knowledge. The task gets harder for higher level operating systems, however it's easier for operating systems you have a copy of, and even easier if you have the source.

Exploits will later be used for hacking. Developing exploits against your own operating systems will make upgrading your OSes to higher levels easier - making them harder to hack for other players.