Information Security vs Cyber Security: What's The Difference?

If you’ve spent time exploring IT or digital protection, you’ve likely noticed that the terms “information security” and “cyber security", are sometimes used interchangeably.

However, they are not one in the same.

In simple terms, information security is the broader discipline that protects all forms of information, while cyber security focuses specifically on protecting digital systems, networks, and online data from cyber threats.

And understanding how they differ is essential – particularly if you’re considering a career change into either field. 

In this blog, we explain the difference between information security and cyber security, how they compare, and the different roles to consider in both areas.

What is information security?

Information security (often referred to as InfoSec) is about protecting information in all its forms – whether digital, printed, or spoken. The goal is to make sure information is secure and available, but only to the right people.  

Data protected by information security includes:

• Digital files and databases
• Printed documents
• Emails and internal communications
• Sensitive business and personal data 

Information security is often explained through three core principles, known as the CIA triad. 

This stands for:

• Confidentiality: only the right people can access information
• Integrity: information stays accurate and unchanged
• Availability: information is accessible when it’s needed

Within organisations, these principles are put into practice using structured frameworks and standards like the NIST Cybersecurity Framework and ISO/IEC 27001.

These frameworks help businesses manage risk and set policies, while also creating consistent best practice processes for employees to follow across organisations. 

What is cyber security?

Cyber security is about protecting digital systems, networks, and devices from cyber-attacks or unauthorised access. It applies to anything connected to the internet or operating in a digital environment.

This includes:

• Computers and mobile devices
• Networks and servers
• Digital data stored or shared online

Cyber security aims to prevent hackers from accessing systems, steal data, or disrupt services. It covers a wide range of cybersecurity threats, including malware, ransomware, phishing emails, and unauthorised hacking attempts.

To do the job well, cyber security professionals use a variety of tools and techniques to detect, prevent, and respond to these threats, like:

• Firewalls: monitors and controls incoming and outgoing network traffic, acting as a barrier between trusted and untrusted systems.
• Encryption: converts data into a secure format that can only be read with the correct key.
• Antivirus software: detects, blocks, and removes malicious software from devices.
• Monitoring systems (SIEM tools): analyses activity across networks to identify unusual behaviour or potential threats.
• Intrusion detection systems (IDS): detects suspicious activity and alert security teams to possible breaches.
• Multi-factor authentication (MFA): adds an extra layer of protection by requiring additional verification beyond a password.

Together, these tools help organisations protect systems, reduce risk, respond quickly and efficiently when threats are discovered.

What’s the difference between information security and cyber security?

Although they’re closely connected, information security and cyber security are not interchangeable.
Information security is the broader concept. It protects all forms of information, whether physical or digital. It includes policies, procedures, access controls, and physical security measures.

Cyber security, on the other hand, focuses specifically on protecting digital systems and networks from cyber-attacks.

To illustrate:

• Storing confidential employee records in a locked filing cabinet is information security
• Protecting the same records in a cloud system using encryption and secure logins is cyber security

Where they come together is in working to reduce risk. 

Is information security a good career?

Information security plays a key role in helping organisations protect all types of information, not just digital data. Because of this, it’s in demand across industries that handle sensitive or regulated information, such as finance, healthcare, and education.

So much so, that it’s among the top fastest-growing skillsets worldwide.

As organisations strengthen data protection practices and meet stricter compliance requirements, demand for skilled information security professionals continues to grow steadily.

Roles in this field typically focus on managing risk, developing security policies and ensuring compliance in all forms.

Common entry-level and mid-level positions include:

• Information Security Analyst
• Risk Manager
• Compliance Specialist 

From there, professionals can progress into governance, risk, or compliance roles, focusing on frameworks that support a more strategic approach to security management.

While information security is often less technical than cyber security, it still requires a strong understanding of security principles, regulatory frameworks, and organisational risk management.

Overall, it offers a stable, long-term career path for those interested in risk management, policy development, and protecting information across both physical and digital environments.

Is cyber security a good career?

As a subset of information security, cyber security is a fast-growing career field that plays a critical role in protecting organisations from increasingly complex digital threats.

As businesses continue to rely on technology and cloud services, the demand for skilled cyber security professionals continues to rise.

Organisations like the UK National Cyber Security Centre (NCSC), for example, highlight the growing importance of cyber security in protecting both businesses and individuals.

Entry-level roles such as Cyber Security Analyst typically involve monitoring systems and responding to potential threats. From there, professionals can progress into areas like penetration testing or security engineering, or similar compliance roles.

Together, they create a complete security strategy, ensuring that organisations can manage risk effectively across both physical and digital systems.

Information Security vs Cyber Security Explained

In practice, information security and cyber security work as part of a single, integrated approach to protecting data and systems.

Information security provides the governance, policies, and frameworks that define how information should be managed, while cyber security applies the technical controls that help enforce these protections in digital environments.

Choosing Between Information Security and Cyber Security

While information security and cyber security are closely related, they often appeal to different career interests and skill sets. Understanding how they differ can help you decide which career path suits you best. 

Once you become qualified, you can apply for roles such as:

• Information Security Analyst
• Security Administrator
• IT Auditor
• Information Security Specialist
• Upskill with ICS Learn

Understanding the difference between information security and cyber security is important for anyone considering a career in IT or digital protection.

It can help you choose the most relevant training or qualification, such as those focused on information security management, business analysis or artificial intelligence.

Whether you want to focus on technical defence or security risk – or simply try you hand at both – by choosing a career in information or cyber security, you’ll play a fundamental role in today’s ever-evolving digital landscape.

Enrol on a 100% online BCS qualification to get started with ICS Learn today.