What knowledge does a hacker need?

Question

Burglary protection

What knowledge is needed to be a hacker? I'm only familiar with Java and js

Answer 1

Criminal Code, various countries.

Answer 2

A hacker (it doesn't matter if it's an IT specialist or a criminal) is the highest degree of IT qualification. You must know the architecture and design of hardware, OS, low-level programming. Any more or less popular system, language, etc.
You must penetrate the essence of things: not just read books, but try to go beyond the permissible limits of any technology, constantly think about how to get around any limitation. In general, there are two approaches - classical (it's like in universities): first a bunch of matan (which, by the way, is not needed all and not always), then the hardware architecture, OS, then assembler, C, and then up to the web (PHP \ JS and others like them).
Or "top-down", this is when you use some kind of technology, trying to understand how it works.
I recommend that you make a test site at home with various operating systems and network technologies and train.
And remember, all life is a constant study, because technologies are improving quite quickly.
For a conscious start, I recommend reading: https://habrahabr.ru/post/251747/

Answer 3

Answer 4

Read about social engineering. Read about Kevin Mitnick. You can be a hacker without code ;)

Answer 5

To become a "hacker" you first need to learn how to use the Internet. This question has already been raised on the toaster dozens of times, it was enough just to type "how to become a hacker" into the search bar on the toaster.

Answer 6

You need to start with specialization... Then you can study the tools and principles of hacking/penetration... And then to infinity... And it's better not to call yourself a hacker!