In today's cyber-driven economy, urging employees to remain vigilant and cautious in order to protect firm data from computer hackers is insufficient. A company must develop and implement a complete information security strategy that covers technological, organizational, human, and physical security risks. Employees and consumers must be informed about what information security is and its potential advantages to support such security practices.

So, get started by learning what information security is from a grassroot level.

What Is Information Security?

Information security (also known as InfoSec) refers to businesses' methods and practices to safeguard their data. This includes policy settings restricting unauthorized individuals from accessing corporate or personal data. InfoSec is a rapidly expanding and dynamic field encompassing everything from network and security architecture to testing and auditing.

Information security safeguards sensitive data from unauthorized actions such as examination, alteration, recording, disturbance, or destruction. The purpose is to protect and maintain the privacy of vital data such as customer account information, financial data, or intellectual property.

Now that you understand the basics of what is information security,  go through the principles on which these security measures are designed.

What Are the Principles of Information Security?


  • Confidentiality: Confidentiality safeguards are put in place to prevent unauthorized information disclosure. The confidentiality principle's primary objective is to keep personal information private and to guarantee that it is visible and accessible only to those who possess it or require it to accomplish their organizational tasks.
  • Integrity: Protection against unauthorized modifications (additions, deletions, revisions, etc.) to data is included in data integrity. The integrity principle ensures that data is accurate, dependable, and not erroneously updated, whether mistakenly or deliberately.
  • Availability: The protection of a system's capacity to make software systems and data completely available when a user requires it is referred to as availability (or at a specified time). The goal of availability is to make the technological infrastructure, applications, and data available when needed for an organizational activity or an organization's consumers.

To cater to every principle, multiple facets of information security must be taken care of. You will cover the different types of InfoSec in the next section.

Types of Information Security


  • Application Security: Application security is a significantly broad topic that includes weaknesses in software in online and mobile apps, along with application programming interfaces (APIs). These weaknesses can be found in user authentication or authorization, code, and settings integrity, and established policies and procedures. Application flaws can open the door to major information security breaches. Application security is a key component of InfoSec perimeter defense.
  • Incident Response: The function that monitors and analyses possibly harmful conduct is incident response. In a breach, IT employees should have a strategy to control the danger and recover the network. Furthermore, the strategy should include a procedure for preserving evidence for forensic investigation and possible prosecution. This information can help avoid additional breaches and assist employees in identifying the perpetrator.
  • Cryptography: Encrypting transmitted data and at rest aids in maintaining data integrity and confidentiality. In cryptography, they often employ digital signatures to confirm data validity. Cryptography and encryption have grown in importance. The AES algorithm is a fantastic example of cryptography in action (AES). The AES algorithm is a symmetric key method to secure secret government information.
  • Vulnerability Management: Vulnerability management includes scanning an environment for flaws (such as unpatched programs) and ranking remedies based on risk. Businesses are continually adding apps, users, infrastructures, and various networks. Consequently, it is critical to analyze the network for any vulnerabilities regularly. Finding a vulnerability ahead of time can spare your company from the devastating repercussions of a breach.

With so many different types of information security, you must be aware of the different attacks that infrastructures are vulnerable to. From standard network breaches to extensive phishing campaigns, there are many risks for an organization to combat.

What Is Information Security: Crafting an Information Security Policy 

An information security policy is a document that sets the ground rules for protecting data and lays out employee responsibilities and behavior for accessing it. An effective information security policy also encompasses access to data on the cloud and protocols for working with contractors and other third parties who may need data access.

An information security policy typically includes:

  • The overall objectives of the policy
  • A description of who has access to data
  • A guideline for user passwords
  • A data support and operations plan to ensure data availability
  • Employee roles and responsibilities for securing data
  • A description of who is responsible for information security

What Is Information Security: Information Security Measures

As stated at the beginning, information security requires a broad approach that incorporates technical, organizational, human, and physical processes:

  • Technical measures include encryption, firewalls, and other preventative measures that protect an organization’s hardware and software.
  • Organizational measures entail creating an internal department devoted to information security and having information security integrated into every department.
  • Human measures involve training all organization members, including contractors, on the proper information security practices.
  • Physical measures consist of controlling access to offices, control rooms, and data centers. 

Risks to Information Security


  • Security Misconfiguration: Security features are available in enterprise-grade technologies and cloud services, but the company must customize them according to its infrastructure. A security breach can occur because of a security misconfiguration caused by neglect or human mistake. Another issue is "configuration drift," which occurs when correct security configuration quickly becomes outdated and leaves a system exposed, unbeknownst to IT or security personnel.
  • Lack of Encryption: Encryption procedures encrypt data so that only individuals with secret keys may decode it. It is extremely successful in preventing loss of data or corruption in the event of technology loss or theft or the event that attackers penetrate organizational systems.
  • Insecure Systems: Security safeguards are frequently compromised because of the rapid pace of technological progress. In other circumstances, it built systems without security measures and remains operational within an organization as legacy systems. Organizations must identify and reduce the danger by securing or patching these vulnerable systems, decommissioning or isolating them.

You have now reached the end of this tutorial on ‘what is information security.’

Build your network security skill-set and beat hackers at their own game with the Certified Ethical Hacking Course. Check out the course preview now!


Information security is crucial in combating complex breaches and fostering a secure workplace among employees. Beyond the protection of local data, cloud data security is also among the most vulnerable of endpoints, among many other facets beyond the scope of this article on what is information security.

Simplilearn provides a Post-Graduate Cyber Security Program to address all areas in which ethical hackers, both new and experienced, must become skilled. Students learn network detection, enumeration, and risk evaluation to prepare them for interviews and potential business prospects. Because the technology sector is in desperate need of competent cybersecurity specialists, now is the time to learn about security research and achieve a strong start in the cybersecurity area.

Do you have any queries on what is information security? Remember to leave your thoughts and queries in the comment section below, and we will get back to you soon.

Our Cyber Security Certifications Duration And Fees

Cyber Security Certifications typically range from a few weeks to several months, with fees varying based on program and institution.

Program NameDurationFees
Post Graduate Program in Cyber Security

Cohort Starts: 4 Jul, 2024

6 Months$ 3,000
Cybersecurity for Technical Leaders Program

Cohort Starts: 13 Jul, 2024

3 Months$ 3,000
Caltech Cybersecurity Bootcamp

Cohort Starts: 15 Jul, 2024

6 Months$ 8,000
Cyber Security Expert6 Months$ 2,999

Learn from Industry Experts with free Masterclasses

  • Boost Your Cybersecurity Career 2X: PGP with MIT SCC Modules - Masterclass by Ron Sharon

    Cyber Security

    Boost Your Cybersecurity Career 2X: PGP with MIT SCC Modules - Masterclass by Ron Sharon

    24th May, Wednesday10:00 PM IST
  • Career Masterclass: The Post Graduate Program in Cyber Security

    Cyber Security

    Career Masterclass: The Post Graduate Program in Cyber Security

    5th Dec, Monday9:00 PM IST
  • Career Masterclass: Why Cybersecurity Should Be Your Career Move in 2023

    Cyber Security

    Career Masterclass: Why Cybersecurity Should Be Your Career Move in 2023

    14th Dec, Wednesday9:00 PM IST