Anyone that can adapt, improvise and overcome. This term can be applied to any field though most commonly used today to suggest one that utilizes extensive computer and network knowledge to remove any obstacles in their path to gain access to any data they require access to or accomplish any goal or mission in the computing field.

Scanned, and unreadable text dubbed in. Image at postimages.org

https://i.ibb.co/bRQMf5H0/IMG-3602.jpg

In prehistoric times, hacking meant C and 8080 assembler code mainly to get peripherals to work. More fun things later on.