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So let's start with me (sorry for my vanity).This is a translation of a very interesting foreign article.About the translation (it is not complete).Don't rush to leave.It is not complete because there are many other articles in one article, and there are more articles in these articles.The translation of the sub-articles and sub-articles will be in another topic (because I am not omnipotent).Stop talking, let's start.

Hacking is the search for vulnerabilities in a network or computer in order to gain access. Becoming a hacker is not easy, and in this article we will touch on the basics.

Ethical hacking: how to hack systems and at the same time earn legally

Who is a hacker? Most people who are far from programming are a malicious criminal who breaks into the security systems of banks to steal money. Something like Hugh Jackman's character from the movie "Password is a Swordfish", who breaks the Vernam cipher to steal $9.5 billion from the government fund. Here we will focus on the legal side of hacking, and if your ideas are inspired by films, we have prepared for you a detailed overview of the profession of a cybersecurity specialist.

SQL
Programming language
Wikipedia
A declarative programming language used to create, modify, and manage data in a relational database managed by a corresponding database management system.
Year of release: 1974

Crystal
Programming language
Wikipedia
An object-oriented general-purpose programming language designed and developed by Arie Borenzweig, Juan Weinerman and Brian Cardiff. Developed by a community of over 300 developers. It has a Ruby-like syntax, but, unlike Ruby, it is compiled and statically typed. Read more
Year of release: 2014
Platform: X64
Website: crystal-lang.org

jаvascript
Programming language
Wikipedia
Multi-paradigm programming language. Supports object-oriented, imperative, and functional styles. It is an implementation of the ECMAScript specification.
Year of release: 1995

PHP
Programming language
Wikipedia
A general-purpose scripting language that is intensively used for developing web applications. Currently, it is supported by the vast majority of hosting providers and is one of the leaders among the languages used to create dynamic websites.
Year of release: 1995
Interesting fact: In 1994, the Danish programmer Rasmus Lerdorf created a set of Perl/CGI scripts for displaying and accounting for visitors to his online resume, processing HTML document templates. Lerdorf named the set Personal Home Page (Personal Home Page).
Website: php.net

Python
Programming language
Wikipedia
A high-level general-purpose programming language with dynamic strict typing and automatic memory management, focused on improving developer productivity, code readability and quality, as well as ensuring the portability of programs written in it. The language is completely object-oriented in the sense that everything is objects. Unusual Read more
Year of release: 1991
Website: python.org

C++
Programming language
Wikipedia
It is widely used for software development, being one of the most popular programming languages. The scope of its application includes the creation of operating systems, various application programs, device drivers, applications for embedded systems, high-performance servers, as well as games. There are many implementations of the C++ language, both free and Read more
Year of release: 1983
Website: isocpp.org

A software platform based on the V8 engine that transforms jаvascript from a highly specialized language into a general-purpose language. Node.js adds the ability for jаvascript to interact with I/O devices through its API written in C++, connect other external libraries written in different languages, providing calls to them from jаvascript code. Node.js is used mainly on the server, acting as a web server, but it is possible to develop on Node.js and desktop window applications and even programming microcontrollers. At the core of Node.js is event-oriented and asynchronous programming with non-blocking I/O.
Year of release: 2009
Platforms: macOS, FreeBSD, OpenBSD, webOS, Linux, Windows, Solaris
Website: nodejs.org

the vaio
bot vkontakte module
Please tell me how to make an answer to an unknown bot command

I would like the bot to send messages after the repost, try it through msg does not work
Code : vk.updates.on('wall_repost', async(ctx) => {
const postId = 1; // ID of the post that is a bonus for repost
const this Post = ctx.wall.copyHistory[0].id
});

Chapter 6. Tips on cryptocurrency trading

How to start trading cryptocurrency?
If you decide to start trading, then here's what you should take note of.

Chapter 5. Technical indicators

What is a technical indicator?
Technical indicators display indicators related to financial instruments. They can be based on price, volume, on-chain data, open positions, social indicators or even other indicators.

Chapter 4. Fundamentals of technical analysis

What is a long position (purchase)?
A long position implies the purchase of an asset based on the growth of its value. Long positions are often used in the context of derivatives products and the foreign exchange market, but they are applicable to almost any asset class or market type. Buying an asset on the spot market in the hope of an increase in its price is also a long position.