Cryptography fun fact:
When a user creates a password, it is turned into a "hash" before being stored to a database. A hash is the result of a mathematic operation that turns the original password into numbers, but to further increase its complexity -and make it more secure- random data is added at the end of that hash. And boom! that's the process known as "salting hashes", the subject of this Illustration I made for the Auth0s blog.
Check the note here