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Questions and Answers
What is the primary function of a Trojan?
What is the primary function of a Trojan?
- To disguise itself as legitimate software and allow unauthorized access (correct)
- To replicate itself by attaching to other programs or files
- To create a backdoor for future attacks
- To encrypt files or lock a system
What is the main consequence of a ransomware attack?
What is the main consequence of a ransomware attack?
- Significant data loss and financial loss (correct)
- Network congestion and slow performance
- System crashes and data corruption
- Unauthorized access to a system
How do viruses typically spread?
How do viruses typically spread?
- Through backdoors created by other malware
- Through infected software, email attachments, or infected websites (correct)
- Through vulnerabilities in operating systems or applications
- Through phishing emails and infected software
What is the primary purpose of a backdoor?
What is the primary purpose of a backdoor?
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What is a characteristic of a worm?
What is a characteristic of a worm?
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What is a common way to remove viruses and worms?
What is a common way to remove viruses and worms?
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What is the difference between a virus and a worm?
What is the difference between a virus and a worm?
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What is a possible consequence of a Trojan attack?
What is a possible consequence of a Trojan attack?
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How do ransomware attacks typically spread?
How do ransomware attacks typically spread?
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What is a zombie computer used for?
What is a zombie computer used for?
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Study Notes
Malicious Software
Types of Malicious Software
1. Trojans
- A type of malware that disguises itself as legitimate software
- Appears to be useful but actually contains malicious code
- Can allow unauthorized access to a system or steal sensitive data
- Can also create backdoors for future attacks
2. Ransomware
- A type of malware that encrypts files or locks a system
- Demands payment in exchange for the decryption key or unlock code
- Can be spread through phishing emails, infected software, or vulnerabilities
- Can cause significant data loss and financial loss
3. Viruses
- A type of malware that replicates itself by attaching to other programs or files
- Can cause system crashes, data corruption, or stealing of sensitive information
- Can be spread through infected software, email attachments, or infected websites
- Can be removed using antivirus software
4. Backdoor
- A type of malware that allows unauthorized access to a system
- Can be used to remotely control a system or steal sensitive data
- Can be created by Trojans or other types of malware
- Can be difficult to detect and remove
5. Worm
- A type of malware that replicates itself without attaching to other programs
- Can cause system crashes, data corruption, or network congestion
- Can spread through vulnerabilities in operating systems or applications
- Can be removed using antivirus software and system updates
6. Zombie
- A type of malware that allows a system to be controlled remotely
- Can be used to send spam or malware to other systems
- Can be part of a botnet, a network of infected systems
- Can be difficult to detect and remove, and can cause significant harm to the system and network
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