Summary

So, to sum this up, let's take a look at what we covered in this chapter. SQL works using relationships, and it accepts a wide range of commands. We've also seen that, in general, some of these can be abused by malicious attackers. For this reason, we should keep security in mind when designing and developing applications that rely on databases. This chapter gave you a taste of the main security issues and possible solutions.

The next chapter will focus on what a malicious attacker can do by taking advantage of SQL capabilities. We will provide examples of this, all while dealing with aspects related to non-relational databases.

This first chapter, despite being more abstract, is essential for focusing on the main concepts behind SQL injection. Of course, this just an introduction to what we are going to cover throughout this book, but with more concrete examples. Be sure to keep these topics in mind when dealing with the practical aspects of SQL injection.

Our journey into SQL injection has only just begun!