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What is computer security?
What is computer security?
The protection of systems and information from harm, theft, and unauthorized use.
What is cybersecurity?
What is cybersecurity?
The practice of defending computers, servers, mobile devices, electronic systems, networks, and data from malicious attacks.
Which of the following is NOT a common category of security?
Which of the following is NOT a common category of security?
Network security is the practice of securing a computer network from intruders, whether targeted attackers or opportunistic malware.
Network security is the practice of securing a computer network from intruders, whether targeted attackers or opportunistic malware.
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Application security focuses on keeping software and devices free of threats.
Application security focuses on keeping software and devices free of threats.
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Information security protects the integrity and privacy of data, both in storage and in transit.
Information security protects the integrity and privacy of data, both in storage and in transit.
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Operational security includes the processes and decisions for handling and protecting data assets.
Operational security includes the processes and decisions for handling and protecting data assets.
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Disaster recovery and business continuity define how an organization responds to a cyber-security incident or any other event that causes the loss of operations or data.
Disaster recovery and business continuity define how an organization responds to a cyber-security incident or any other event that causes the loss of operations or data.
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What does business continuity refer to?
What does business continuity refer to?
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Disaster recovery policies dictate how the organization restores its operations and information to return to the same operating capacity as before the event.
Disaster recovery policies dictate how the organization restores its operations and information to return to the same operating capacity as before the event.
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End-user education addresses the most unpredictable cyber-security factor: people.
End-user education addresses the most unpredictable cyber-security factor: people.
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Teaching users to delete suspicious email attachments, not plug in unidentified USB drives, and various other important lessons is vital for the security of any organization.
Teaching users to delete suspicious email attachments, not plug in unidentified USB drives, and various other important lessons is vital for the security of any organization.
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The goal of information security follows three main principles: Confidentiality, Integrity, and Availability.
The goal of information security follows three main principles: Confidentiality, Integrity, and Availability.
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Confidentiality is ensuring that information is available only to the intended audience.
Confidentiality is ensuring that information is available only to the intended audience.
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Integrity is protecting information from being modified by unauthorized parties.
Integrity is protecting information from being modified by unauthorized parties.
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Availability is ensuring that when the individual that needs that piece of data to perform a job duty is ready to utilize it, it must be readily accessible.
Availability is ensuring that when the individual that needs that piece of data to perform a job duty is ready to utilize it, it must be readily accessible.
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What is a firewall?
What is a firewall?
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What is a hacker?
What is a hacker?
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What is a threat in cybersecurity?
What is a threat in cybersecurity?
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What is vulnerability in cybersecurity?
What is vulnerability in cybersecurity?
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Which of the following is NOT a computer security threat?
Which of the following is NOT a computer security threat?
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What are the four major threats addressed by computer security precautions?
What are the four major threats addressed by computer security precautions?
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What is malware?
What is malware?
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Malware is always unintentional and a result of programming errors.
Malware is always unintentional and a result of programming errors.
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What are worms?
What are worms?
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Spyware is a type of malware that infects files to spread or propagate.
Spyware is a type of malware that infects files to spread or propagate.
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Spyware is different from a virus as it replicates and embeds into other device files.
Spyware is different from a virus as it replicates and embeds into other device files.
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What is the primary function of a computer worm?
What is the primary function of a computer worm?
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How do worms spread?
How do worms spread?
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Worms require an infected host to spread.
Worms require an infected host to spread.
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A bot is a malware.
A bot is a malware.
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Which of the following is NOT a distribution channel for malware?
Which of the following is NOT a distribution channel for malware?
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What is phishing?
What is phishing?
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Why is phishing effective?
Why is phishing effective?
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A phishing email can include a link that is used to steal the victim's personal information or install malware on the mobile device.
A phishing email can include a link that is used to steal the victim's personal information or install malware on the mobile device.
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A denial of service attack (DoS) is a cyberattack on devices, information systems, or other network resources that prevents legitimate users from accessing expected services and resources.
A denial of service attack (DoS) is a cyberattack on devices, information systems, or other network resources that prevents legitimate users from accessing expected services and resources.
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In a DoS attack, rapid and continuous online requests are sent to a target server to overload the server's bandwidth.
In a DoS attack, rapid and continuous online requests are sent to a target server to overload the server's bandwidth.
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A distributed denial of service (DDoS) attack is a common type of DoS attack.
A distributed denial of service (DDoS) attack is a common type of DoS attack.
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Unlike most cyberattacks initiated to steal sensitive information, initial DDoS attacks are launched to make websites inaccessible to their users.
Unlike most cyberattacks initiated to steal sensitive information, initial DDoS attacks are launched to make websites inaccessible to their users.
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DDoS attacks can serve as a facade for other malicious acts.
DDoS attacks can serve as a facade for other malicious acts.
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Study Notes
Computer and Cybersecurity
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Computer Security: Protecting computer systems and information from harm, theft, and unauthorized use. Hardware protection uses standard security measures like serial numbers, locks, and alarms. Protecting information and system access uses more complex tactics.
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Cybersecurity: Protecting computers, servers, mobile devices, electronic systems, networks, and data from malicious attacks. Also known as information technology security or electronic information security. It encompasses a broad range of contexts, from business to mobile computing.
Common Security Categories
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Network Security: Securing computer networks from intruders, whether targeted attackers or opportunistic malware.
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Application Security: Keeping software and devices free of threats. A compromised application can provide access to sensitive data. Successful security begins in the design stage, before deployment.
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Information Security: Protecting the integrity and privacy of data, both in storage and transit.
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Operational Security: Includes the processes and decisions for handling and protecting data assets. Access permissions and procedures for data storage and sharing fall under this category.
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Disaster Recovery and Business Continuity: Defining how an organization responds to cybersecurity incidents or events causing operational or data loss. This includes restoring operations and information to their pre-incident state. This involves policies that dictate recovery steps.
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End-User Education: Critical to mitigate the unpredictable human factor in cybersecurity. Includes teaching users to avoid suspicious emails, attachments, or links. Important to educate users on the vital role they play in maintaining security.
CIA Triad
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Confidentiality: Ensuring information is accessible only to the intended audience.
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Integrity: Protecting information from unauthorized modification.
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Availability: Ensuring information is readily accessible to authorized users when needed.
Good Security Practices for Individuals
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Install Antivirus and Anti-malware Software: Verify the software legitimacy to minimize vulnerabilities, keep updated.
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Use Strong Passwords: Avoid reusing passwords across multiple accounts and websites. Change passwords on a schedule for better security, and avoid saving them on insecure sites.
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Log off Public Computers: Public computers are susceptible to malware, so log out completely after use.
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Save and Back up Data: Implement regular data backups to protect against inevitable events like hardware failure or virus infection. Validate backup files to ensure they can be easily restored.
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Limit Social Network Information: Be cautious about personal information shared online. Use privacy and security settings to protect yourself and personal information.
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Download Files Legally: Avoid peer-to-peer (P2P) networks and file-sharing clients.
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Keep Personal Information Safe: Avoid clicking on suspicious links or divulging information online if unsure of the sender or website. Be wary of phishing attempts which try to trick users.
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Lock Your Computer: Lock devices when unattended to maintain security.
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Keep Applications Up-to-Date: Enable automatic updates or manually ensure all applications are current to mitigate vulnerabilities.
Malware
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Malware: A general term to describe various malicious software. These softwares are unwanted and potentially dangerous.
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Different types of Malware: Ransomware, Spyware, Adware, Worms, Trojans, Botnets, Viruses.
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Software Bugs vs Malicious Activities: Understanding that software errors (bugs) differ from the intentional actions of malware.
Distribution Channels for Malware
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Download: Unintended downloads from the internet.
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Unsolicited Email: Unwanted attachments or embedded links.
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Physical Media: Integrated or removable media (thumb drives).
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Self-Propagation: Malware's ability to spread from computer to computer.
Common Computer Fraud Techniques
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Phishing: Spoofed emails that appear to come from legitimate companies, tricking users into revealing information on fake Websites. Attackers also use fraudulent texts and voicemails to collect sensitive data. Examples of actions include clicking on attachments, enabling macros in documents, updating passwords, and connecting to new Wi-Fi hotspots.
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Denial-of-Service (DoS) Attacks: Overloading a service or website or servers with traffic to make it unusable, or very slow.
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Distributed Denial-of-Service (DDoS) Attacks: Similar to DoS, but using multiple compromised systems to overwhelm the target, making it very hard to defend against.
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Description
Dive into the essentials of computer and cybersecurity, examining key concepts such as computer security, cybersecurity, and various security categories. This quiz will enhance your understanding of how to protect systems from threats and malicious attacks. Test your knowledge about network security, application security, and information security.
