I suspect this is a cultural thing. Here in Germany, most journalists and writers use the term "hacker" for both, the constructive and destructive parts. For example, the Chaos Communication Congress is described by media as "hacker congress" even though it has a wide scope where presentations about breaking into systems are just a minor part of it.
oh, for sure. Hacker I think has a much more broad meaning than JUST security. I don't think security should be excluded from it though as the How to be a Hacker article promotes.