Answer: Scams. People do that to get your credit card information or your social security. That's a cybercrime. Hacking is one too. Hacking is somewhat illegal in other states, California, is where hacking is illegal, and you can face lots of heavy penalties.
Hacking: The gaining of unauthorized access to data in a system or computer.
Security hacker: A security hacker is someone who explores methods for breaching defenses and exploiting weaknesses in a computer system or network.
Cybercrime: A crime that involves a computer and a network. The computer may have been used in the commission of a crime, or it may be the target. Cybercrime may threaten a person, company or a nation's security and financial health