COMPUter SECurity


Computer security, often referred to as cyber security, is a branch of technology focusing on protecting computers, servers, mobile devices, electronic systems, networks, and data from digital attacks, damage, or unauthorized access. It encompasses measures taken to manage the risk of unauthorized exploitation of these systems. This field is constantly evolving to counteract the increasing sophistication and frequency of cyber threats.


The phonetic pronunciation of the keyword “COMPUter SECurity” in American English is: /kəmˈpyo͞otər səˈkyo͝orədē/

Key Takeaways

  1. Importance of Data Protection: Protecting personal and corporate data is the primary purpose of computer security. It prevents unauthorized users from accessing, modifying, or deleting sensitive information.
  2. Prevention of Malware: One of the main tenets of computer security is to defend against malware (viruses, worms, Trojans, ransomware etc.), which can seriously damage systems and networks.
  3. Compliance with laws and regulations: Companies have to comply with various privacy and data protection laws. With a strong computer security strategy, they’re able to maintain their reputation, avoid legal penalties, and protect their customers’ data.


Computer Security, often simply referred to as cybersecurity, is of vital importance due to the widespread reliance on computer systems in our daily lives and in business operations. It involves the protection of computer systems and the data they store, from theft, damage, disruption or misdirection, thereby ensuring data confidentiality, integrity and availability. Given the increasing amount of sensitive data being stored digitally – database, personal information, financial transactions, even national security matters – robust computer security systems are crucial. Cyber-attacks can lead to significant financial losses, damage to reputation, loss of critical data, and potential legal implications. Therefore, implementing strong computer security measures is essential to prevent such risks and ensure uninterrupted, safe operations.


COMputer SECurity, more commonly referred to as cybersecurity, primarily intends to safeguard computers and their systems from threats and damage. The primary purpose of cybersecurity is to protect valuable data – both personal and professional – from potential threats such as hackers, viruses, malware, and other forms of cyber-attacks. As our dependence on technology has increased, the significance and necessity of cybersecurity have grown proportionally. From individuals protecting personal information like bank details and identity, to companies securing confidential data and client information, computer security is universally crucial.Carefully and effectively employed computer security measures ensure the integrity, confidentiality, and availability of information stored in computer systems. Beyond data protection, computer security also aids in preventing disruption of services that businesses offer. This is paramount as many industries, including healthcare, finance, and transportation, rely heavily on computer systems for their daily operations. A breach could be disruptive and catastrophic both from operational and reputation perspectives. Therefore, computer security assists not only in protecting sensitive data but also in maintaining commercial stability and fostering trust among clients, stakeholders, and users.


1. Antivirus Software: Antivirus programs like McAfee or Norton are real world examples of computer security. They continuously scan your computer for malicious programs such as Trojans, viruses and other malware. If a threat is detected, the software neutralizes it to keep your computer safe.2. Two-Factor Authentication: A common security measure used by online services, including Google and PayPal, two-factor authentication adds an additional layer of security by requiring two forms of verification before granting access to an account. Typically this involves something you know (like a password) and something you possess (like your phone, where you receive a verification code).3. Firewalls: A firewall is a network security system that monitors and controls incoming and outgoing network traffic. It can be hardware, like a router with built-in security features, or software like the default Windows Defender Firewall on Windows devices. The purpose of a firewall is to establish a barrier between your internal network and incoming traffic from external sources (such as the internet) in order to block malicious traffic like viruses and hackers.

Frequently Asked Questions(FAQ)

**Q: What is Computer Security?**A: Computer Security is a branch of technology focused on protecting computer systems from theft, damage, or disruption to their hardware, software, or information. It also encompasses prevention against the disruption or misuse of services they provide.**Q: Why is Computer Security important?**A: Computer Security is vital because it protects all personal and business-related data from intrusions, including sensitive information like financial details, health records, client databases, or confidential corporate files.**Q: What measures can be taken to improve Computer Security?**A: Measures like installing firewalls, using secure passwords, regularly updating and patching systems, employing encryption techniques, performing regular backups, and educating users about potential cybersecurity threats can help improve computer security.**Q: What is malware and how does it compromise Computer Security?**A: Malware, or malicious software, is any program or file that’s harmful to a computer user. It includes computer viruses, worms, Trojan horses, ransomware, and spyware. These harmful programs can compromise Computer Security by corrupting files, stealing sensitive data, and even taking control of your system.**Q: What are the different careers in Computer Security?**A: Some of the careers in computer security include roles like Security Analyst, Security Architect, Security Administrator, Security Engineer, Security Consultant, and Ethical Hacker or Penetration Tester, among others.**Q: What is a Computer Security Incident Response Team (CSIRT)?**A: A Computer Security Incident Response Team (CSIRT) is a group of experts that respond to computer security incidents. They are responsible for mitigating the attack, preventing further damage, restoring affected systems, and learning from the incident to improve future response and prevention.**Q: What is the role of encryption in Computer Security?**A: Encryption is a key pillar of computer security. It works by converting information or data into a code to prevent unauthorized access. It helps protect sensitive data, both in storage and during transmission, ensuring that even if data is intercepted or accessed without authorization, it remains unreadable.**Q: How do antiviruses contribute to Computer Security?**A: Antivirus software is designed to detect, prevent, and remove malicious software like viruses, worms, and trojans, enhancing overall computer security. They protect your system from potential threats and perform regular scans to keep your computer safe.

Related Finance Terms

  • Firewall
  • Encryption
  • Malware
  • Password Authentication
  • VPN (Virtual Private Network)

Sources for More Information


About The Authors

The DevX Technology Glossary is reviewed by technology experts and writers from our community. Terms and definitions continue to go under updates to stay relevant and up-to-date. These experts help us maintain the almost 10,000+ technology terms on DevX. Our reviewers have a strong technical background in software development, engineering, and startup businesses. They are experts with real-world experience working in the tech industry and academia.

See our full expert review panel.

These experts include:


About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

More Technology Terms

Technology Glossary

Table of Contents