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Information Security Principles: A Beginner’s Guide

information security principles

What are the information security principles? But, why do we have to know about them?

To sum up, we need to protect our information. If not, hackers will take advantage of that.

Fortunately, there is something that we can do. And not only companies can do so. Even individuals.

But, how? Read on to learn more about information security principles.

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What Is Information Security?

Before we talk about the information security principles, let’s define information security first.

In short, information security protects information. And these include digital and physical ones.

It also means that only those who are allowed can see and access the information. So, it’s like keeping something a secret. But how?

To do so, we need to apply security controls, like passwords. So, you can prevent other people to see it.

So, how does information security work?

Most of the time, infosec experts apply them. But as mentioned, there is something that even individuals can do.

One important step is to know about the dangers. Doing so will help us learn how to fight against them.

But, you may wonder. Why do we have to do that? Is it really necessary?

Well, there are criminals wherever we go. And in information security, too. 

Cybercriminals are getting smarter. Before we know it, they already discover ways to steal information.

But, it doesn’t end in stealing. Some even threaten companies and people to give them money. Or sell the stolen information to even worse people.

So, you don’t just lose your information and files. You can even lose your identity.

Worse, many companies suffer from so much loss. Both in money and reputation terms.

So, we all should have security controls in the first place. But, not just any controls. Why so?

It should be based on information security principles. And that brings us to our next topic.

Let’s dive into it deeper.

What Are Information Security Principles?

Information security principles are also known as the CIA triad. It is a security model that guides us on how we can protect information.

Also, the CIA is a short term for its three parts, which are:

  1. Confidentiality
  2. Integrity
  3. Availability

Now, what do each of them mean?

Information Security Principles: Confidentiality, Integrity, Availability


So, what does confidentiality mean in infosec?

Keeping information confidential means that you keep it in secret. For example, you don’t just give your passwords to anyone.

in companies, it means the following two ways:

  1. Limit access to those allowed only.
  2. Do not give access to not allowed.


Now, what is integrity in information security?

Keeping information with integrity means that it should always be correct. For example, banks should not change the account balances of clients. Or else, it has now tampered. 

In companies, they can keep information integrity in two ways:

  1. Do not change data without permission.
  2. Ensure that the data is reliable and trusted.


Finally, how is availability connected in infosec?

Keeping information available means that the right people can access it when needed. So, the whole system can always function.

In companies, they can do this in two ways:

  1. Give timely access to allowed users.
  2. Run systems always.

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