If we here talk about hacking, we need to forget all Hollywood movies. It is not that attackers can go to a coffee shop and simply hack into a company, at least not if an attacker just starts with an attack.

What is hacking? Well, typically the term hacking encompasses a wide variety of attacks. Attacks that take advantage of vulnerabilities in software and services, weaknesses in protection mechanisms, and other shortcomings of targeted systems that do not involve social engineering or malware.

Hackers try to find, or exploit known or new vulnerabilities to gain access to the infrastructure.

In the past, there are many examples of this, a well-known one was the SQL injection attack, which was possible because of security vulnerabilities.