Add definitions

[Ro5s]

Would be good to establish basic definitions here, e.g., for "privacy theft".

Suggestion from: https://twitter.com/padolsey/status/1091380068096589824

[theNaut1lus]

Would like to work on this issue if no one else is @Ro5s @ahtee
There are many areas like privacy theft, plagiarism, functionality .etc that can be touched upon

[ahtee]

Sure! Please submit a PR when ready!

[Ro5s]

Would certainly appreciate your input there @co16353sidak !