Hackers
People who enjoy using computers and exploring the information infrastructure and systems connected to it. (e.g., Chinese-Hackers) (e.g., Japanese-Hackers) (e.g., Canadian-hacker)
Complexity: While not generally malicious, these people tend to gather and exploit tools that open holes to other attackers. They also sometimes make mistakes or become afraid and feel they have to cover their tracks, thus causing incidental harm.