What type of malware connects to a command-and-control system, allowing attackers to manage, control, and update it remotely? Group of answer choices Botnet Virus RAT Worm
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- **Botnet**: A network of infected devices (bots) that can be controlled remotely by an attacker. - **Virus**: A type of malware that attaches itself to legitimate programs and spreads when the infected program is executed. - **RAT (Remote Access Trojan)**: Show more…
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Debra downloads an application on her workplace computer. As she installs the application, she notices an option to install an additional program. She unchecks the box to choose not to install the additional software. What type of malware did Debra prevent from being installed on her system? a. Cryptomalware b. Potentially unwanted program (PUP) c. Ransomware d. File-based virus Jose receives a security report that none of the employees in his organization can access the internal server. When he logs on to the server, he receives a message that all the files on the server have been encrypted and that he must pay a fee of $600 in bitcoins to decrypt the files. What type of malware was installed on the server? a. Cryptomalware b. Worm c. Ransomware d. Fileless virus A fileless virus has infected your computer. Which of the following is not a service that might be at risk? a. .NET Framework b. Macro c. Windows Control Panel d. PowerShell John downloaded new calendar software and installed it. Since then, he's noticed unexpected new activity, such as pop-up windows, on the computer. What should he do first? a. Unplug his computer from the power outlet. b. Unplug his computer from the network. c. Run rootkit detection software. d. Run antimalware software. James has recently run a vulnerability scan and determined that the current version of SQL installed on the server is vulnerable and out of date. Which of the following is the server most vulnerable to? a. XML injection b. SQL injection c. Virus d. SQL scripting
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Q6. Describe how a botnet can be created and how it can be used for a DDoS attack. A botnet is a network of compromised computers or devices that are under the control of a malicious actor. These compromised devices, also known as bots or zombies, are typically infected with malware that allows the attacker to remotely control them. Botnets are created through various methods, including: 1. Exploiting Vulnerabilities: Attackers can exploit vulnerabilities in operating systems, software, or network protocols to gain unauthorized access to computers or devices. Once access is gained, malware can be installed to turn the compromised device into a bot. 2. Social Engineering: Attackers may use social engineering techniques, such as phishing emails or fake software downloads, to trick users into unknowingly installing malware on their devices. This malware then allows the attacker to control the compromised device. 3. Brute Force Attacks: In some cases, attackers may attempt to gain access to devices by systematically trying different username and password combinations until they find the correct credentials. Once access is gained, malware can be installed to create a bot. Once a botnet is created, it can be used for various malicious activities, including Distributed Denial of Service (DDoS) attacks. In a DDoS attack, the attacker uses the botnet to overwhelm a target website or network with a flood of traffic, rendering it inaccessible to legitimate users. The steps involved in using a botnet for a DDoS attack are as follows: 1. Command and Control: The attacker sends commands to the bots in the botnet, instructing them to initiate the DDoS attack. These commands are typically sent through a centralized command and control server, which acts as a communication hub for the botnet. 2. Bot Activation: Upon receiving the command, the bots in the botnet start generating a massive amount of traffic towards the target. This traffic can be in the form of HTTP requests, UDP packets, or other network protocols, depending on the type of DDoS attack being carried out. 3. Traffic Overload: The target website or network becomes overwhelmed with the flood of traffic from the botnet. This flood of traffic consumes the target's resources, such as bandwidth, processing power, or memory, making it difficult for legitimate users to access the target. 4. Denial of Service: As a result of the traffic overload, the target website or network becomes unavailable to legitimate users, effectively denying them access to the services or information provided by the target. In summary, a botnet is created by compromising computers or devices through various methods, and it can be used for a DDoS attack by overwhelming a target with a flood of traffic generated by the bots in the botnet.
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