"Computer security, cyber security, digital security or information technology security (IT security) is the protection of computer systems and networks from attacks by malicious actors that may result in unauthorized information disclosure, theft of, or damage to hardware, software, or data, as well as from the disruption or misdirection of the services they provide."
Provides an introduction to the various aspects of computer security including the different types of threats and the strategies used to protect against them.
Authentication: The process of verifying the identity of a user, device or application.
Encryption: The process of converting plain text into a coded text that can only be read by authorized parties.
Public Key Infrastructure (PKI): A system for creating, managing, and distributing digital certificates that are used to verify the authenticity of public keys.
Firewalls: Network security systems that control and monitor network traffic.
Intrusion Detection and Prevention Systems (IDS/IPS): Software tools that monitor networks and alert administrators to potential security breaches.
Malware: Software that is designed to harm or exploit computer systems.
Virus: A type of malware that attaches itself to a legitimate program and replicates itself.
Worm: A self-replicating program that spreads quickly across networks.
Trojan horse: A type of malware that disguises itself as a legitimate program or file in order to gain access to a system.
Denial of Service (DoS) Attacks: An attack that overwhelms a system with traffic, making it inaccessible.
Social Engineering: A technique that involves tricking people into divulging sensitive information or performing actions that compromise security.
Black Hat Hacking: Unauthorized access to computer systems for malicious purposes.
White Hat Hacking: Authorized access to computer systems for the purpose of identifying and fixing vulnerabilities.
Cyber Crime: Criminal activities conducted using a computer or the Internet.
Risk Assessment and Management: The process of identifying, analyzing and evaluating risks to an organization's information assets and implementing measures to reduce those risks.
Authentication: The process of verifying the identity of a user or system, typically through a password or other credential.
Authorization: The process of determining what actions a user or system is permitted to perform.
Encryption: The process of converting data into a format that can only be read by someone with the appropriate key or password.
Firewall: A system that controls access to a network, typically by blocking unauthorized traffic while allowing authorized traffic to pass.
Intrusion Detection: Systems designed to detect unauthorized access or use of a system.
Malware Prevention: Software tools and techniques designed to prevent malware infections.
Patch Management: The process of keeping software up to date with the latest security patches and updates.
Network Security: The protection of network assets and the control of network access.
Data Loss Prevention: The tools and techniques used to prevent unauthorized access to or loss of sensitive data.
Physical Security: The protection of physical assets, such as servers, routers, and other computing equipment.
Risk Management: The process of assessing and mitigating the risks associated with computer security issues.
Security Policies: The rules and guidelines that govern the use of technology and data within an organization.
Social Engineering: Techniques used to manipulate people into divulging sensitive information or taking actions that compromise security.
Threat Intelligence: The information and tools used to identify and mitigate cyber threats.
"...unauthorized information disclosure, theft of, or damage to hardware, software, or data, as well as from the disruption or misdirection of the services they provide."
"The field is significant due to the expanded reliance on computer systems, the Internet, and wireless network standards such as Bluetooth and Wi-Fi."
"Also, due to the growth of smart devices, including smartphones, televisions, and the various devices that constitute the Internet of things (IoT)."
"Cybersecurity is one of the most significant challenges of the contemporary world, due to both the complexity of information systems and the societies they support."
"Security is of especially high importance for systems that govern large-scale systems with far-reaching physical effects, such as power distribution, elections, and finance."
"Computer security, cyber security, digital security or information technology security (IT security)..."
"...protection of computer systems and networks from attacks by malicious actors..."
"...attacks by malicious actors that may result in unauthorized information disclosure..."
"...theft of, or damage to hardware, software, or data..."
"...as well as from the disruption or misdirection of the services they provide."
"The expanded reliance on computer systems, the Internet, and wireless network standards such as Bluetooth and Wi-Fi."
"...growth of smart devices, including smartphones, televisions, and the various devices that constitute the Internet of things (IoT)."
"Cybersecurity is one of the most significant challenges of the contemporary world, due to both the complexity of information systems and the societies they support."
"Power distribution, elections, and finance."
"...protection of computer systems and networks from attacks by malicious actors..."
"...attacks by malicious actors that may result in unauthorized information disclosure..."
"...systems that govern large-scale systems with far-reaching physical effects..."
"...protection of computer systems and networks from attacks by malicious actors that may result in theft of, or damage to hardware, software, or data..."
"...as well as from the disruption or misdirection of the services they provide."