I think that to some extent both meanings can co-exists, they're not even entirely incompatible actually. Sure "stealing credit card numbers or disabling public

I think that to some extent both meanings can co-exists, they're not even entirely incompatible actually. Sure "stealing credit card numbers or disabling public utilities" is not really in the spirit of hacking in the good sense, but breaking into systems or other illegal stuffs can also be hacktivism (think of a Robin Wood analogy to, for instance "stealing" research papers back), and is part of what a hacker in the sense of the linked post may do.