Ask HN: What's Your Definition of “Hacker”?

The comments in https://news.ycombinator.com/item?id=23377186 really made me worried many readers here are actually expecting info about corp or system breach/leaks/virus/malware/network attacks, etc. Hence the question in title.

My understanding: http://www.catb.org/esr/faqs/hacker-howto.html#what_is