A computer hacker usually gets into a companys network by?

Organisations store huge amounts of data in databases to keep track of everything from customers, orders, employees etc. These databases usually have externally facing connections, such as to a web server. One way a hacker could attempt to gain access is through SQL Injection.

When you browse a website and click on a link, a request will be sent to the server for information. SQL injection involves sending extra code alongside request. So for example, instead of displaying a list of products, it displays the entire list of employees, you get the idea.