In the early days of computing the term hackers was used with a different meaning. Not all hackers limited themselves to patching kernels and reset passwords when asked. Some started to break into poorly secured systems to prove it’s possible and eventually crossed the border into breaking into systems specifically to steal information and/or services. To cope with that, new terms such as black hat/white hat were invented.”]
Source: https://securelist.com/to-hack-or-not-to-hack/29880/