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Questions and Answers
What is the main goal of a control or countermeasure in computer security?
What type of attack is intended to harm specific computers or users?
What is the term used to describe a malicious computer security event?
What is the term used to describe the possibility of harm occurring?
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What type of attackers are motivated by fun, challenge, or revenge?
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What is the goal of attackers involved in organized crime?
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What is the link between computer security and terrorism?
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What occurs when a threat is realized against a vulnerability?
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What type of attack can harm any computer or user?
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What is the term used to describe a weakness that can be exploited by a threat?
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Study Notes
Dealing with Harm
- Harm can be dealt with in several ways: preventing it, deterring it, deflecting it, mitigating it, detecting it, and recovering from its effects.
Controls
- Controls can be used simultaneously to deal with harm.
- Controls can be grouped into three largely independent classes: physical, procedural (or administrative), and technical.
Physical Controls
- Physical controls stop or block an attack using tangible means, such as locks, guards, and fire extinguishers.
Procedural or Administrative Controls
- Procedural or administrative controls use commands or agreements that require or advise people how to act, such as laws, regulations, policies, procedures, guidelines, copyrights, patents, and contracts.
Technical Controls
- Technical controls counter threats using technology (hardware or software), including passwords, access controls, network protocols, firewalls, intrusion detection systems, encryption, and network traffic flow regulators.
Vulnerabilities
- Computer systems have vulnerabilities, such as weak authentication, lack of access control, errors in programs, finite or insufficient resources, and inadequate physical protection.
- Each vulnerability can allow harm if paired with a credible attack.
Threats
- A threat to a computing system is a set of circumstances that has the potential to cause loss or harm.
- Threats can be considered in two ways: what bad things can happen to assets and who or what can cause or allow those bad things to happen.
Control Paradigm
- A control or countermeasure is an action, device, procedure, or technique that removes or reduces a vulnerability.
- A threat is blocked by control of a vulnerability.
Types of Threats
- Human errors can lead to harm, and malicious attacks can be random or directed.
- Malicious attacks can be committed by individuals, organized groups, organized crime, and terrorists.
Types of Attackers
- Individuals may attack for fun, challenge, or revenge.
- Organized, worldwide groups, organized crime, and terrorists may also attack.
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Description
Learn about the different ways to deal with harm from cybersecurity threats, including prevention, deterrence, deflection, mitigation, detection, and recovery. Understand the importance of controls in protecting against attacks.