14. Computer Security & Ethics Cyber Security Basics, Viruses and Malware, Antivirus, Data Privacy, Ethical Use of Computers
Computer security and ethics are important aspects of modern computing. As computers and the internet become part of everyday life, protecting data, systems, and users from misuse and cyber threats has become essential.
Computer security focuses on protecting computer systems and information from unauthorized access, damage, or theft. Computer ethics deals with responsible and moral behavior when using computers and technology.
Cyber security refers to the practice of protecting computer systems, networks, and data from digital attacks, unauthorized access, and damage.
Cyber attacks are carried out by individuals known as hackers who attempt to gain access to systems for stealing information, causing damage, or disrupting services.
Cyber security involves protecting:
Cyber security mainly focuses on three important principles:
Confidentiality
Ensuring that sensitive information is accessible only to authorized users.
Example: Personal bank account information should only be accessible to the account owner.
Integrity
Ensuring that data remains accurate and is not altered by unauthorized users.
Example: Exam results in a university database should not be modified by unauthorized persons.
Availability
Ensuring that systems and data are accessible to authorized users whenever needed.
Example: Online banking services should be available to customers whenever they need them.
Malware stands for Malicious Software. It refers to harmful software designed to damage, disrupt, or gain unauthorized access to computer systems.
A computer virus is a type of malware that attaches itself to programs or files and spreads from one computer to another.
When a virus infects a computer, it may corrupt files, slow down the system, or even steal sensitive information.
Virus
A program that attaches itself to other files and spreads when the infected file is executed.
Worm
A self-replicating program that spreads automatically across networks without user interaction.
Trojan Horse
Malicious software disguised as a legitimate program to trick users into installing it.
Spyware
Software that secretly monitors user activities and collects information.
Ransomware
Malware that locks or encrypts a user's files and demands payment to restore access.
An antivirus is a security software designed to detect, prevent, and remove malware from a computer system.
Antivirus programs scan files and system activities to identify malicious software and protect the computer from infection.
Virus Detection
Identifies viruses and other malicious programs.
Virus Removal
Deletes or quarantines infected files.
Real-time Protection
Monitors system activities continuously to prevent threats.
System Scanning
Scans the entire computer to find hidden malware.
Regular updates are important because new viruses are constantly being created.
Data privacy refers to protecting personal and sensitive information from unauthorized access or misuse.
Many organizations collect and store user data such as names, phone numbers, addresses, passwords, and financial information. Protecting this data is critical to prevent identity theft and fraud.
Examples of personal data:
Strong Passwords
Use complex passwords containing letters, numbers, and symbols.
Two-Factor Authentication (2FA)
Requires two forms of verification before accessing an account.
Encryption
Converts data into a secure format that cannot be easily read by unauthorized users.
Secure Networks
Avoid using public Wi-Fi for sensitive transactions.
Regular Software Updates
Keep systems updated to fix security vulnerabilities.
Computer ethics refers to the moral principles and guidelines that govern the responsible use of computers and information technology.
Users should use computers in ways that respect others' rights, privacy, and intellectual property.
Respect Privacy
Do not access or share someone else's personal data without permission.
Avoid Software Piracy
Do not illegally copy or distribute copyrighted software.
Respect Intellectual Property
Give proper credit to authors, programmers, and creators.
Do Not Harm Others
Avoid spreading malware, hacking systems, or cyberbullying.
Use Technology Responsibly
Use computers for constructive and beneficial purposes.
Ethical computer use helps create a safe and trustworthy digital environment for everyone.
Computer security and ethics are essential for protecting digital systems and maintaining responsible use of technology. Cyber security focuses on protecting computer systems, networks, and data from threats such as viruses and malware. Antivirus software helps detect and remove malicious programs, while data privacy measures protect sensitive information from misuse. At the same time, ethical computer use encourages responsible behavior, respect for privacy, and respect for intellectual property. Understanding these concepts helps individuals and organizations maintain a secure and trustworthy digital environment.