Key Principles of Information Security

Key Principles of Information Security

What are the key principles of information security? Why is it vital for companies to follow these? And how can they do so?

Information security, Infosec, or data security. This is a practice of keeping data safe and secure from any unauthorized access or change.

May it be physical or digital data. Whether stored or during transfer.

Also, this is under cyber security. It has three key principles that companies need to follow. Then build their policies around. 

These principles are often called the CIA triad. What are these?

Let’s dig deeper into this article to know more.

Key Principles of Information Security


This might be the first thing that comes to mind when thinking about Infosec. And as it should be.

Today, we are more reliant on data. Thus, it is vital to keep it safe from unauthorized persons. And only those who need the data should be able to access it.

So, to ensure this, companies need to know who is trying to access data. Then, block their attempts if they are not allowed to do so.

What are the common things to use for this? These are:

  • passwords
  • authentication
  • encryption
  • software against penetration attacks

Thus, companies can make sure their data keeps its confidentiality. If they don’t do these, they make it easy for attackers to get into their data.


What does integrity mean? It means keeping data accurate, reliable, and complete.

Thus, preventing any unauthorized change or even deletion. Whether by accident or intentional. Whether by outsiders or those with access but do not have rights to edit.

So, many of the ways to ensure confidentiality are also ways to keep integrity. After all, if hackers cannot access data, they also can’t change anything. Right?

But here comes the problem when they get in. Or keeping those who have access from damaging integrity.

What can they do? Checksums. What is this? It can help them check data integrity.

Also, there is control software. It can help them control those who can access data and who among them can only edit it.

Then, they can do frequent backups. So they can restore data in the event of any unwanted change.


Infosec is not only focused on keeping people away from data. Availability is the opposite of confidentiality.

While the latter keeps people away from data, the former makes sure people get to data. But these are only for those who are authorized to do so.

Thus, it is vital to keep them able to access data anytime. And it must be secure when they do so.

So, ensuring availability means matching network and computing resources. To what? To the amount of data access they expect.

Then, making sure they backup data. And have the right disaster recovery plan in case of any emergency after access.

Key Principles are Vital

In conclusion, the key principles are vital in making Infosec policies. When companies follow these, they strengthen their defenses from any attacks. And makes sure it’s easy for them to access data.

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