LO 7.5 Which of the following is not a way to prevent your computer from being attacked by ransomware?Choose one answer from the options below.A. making sure your antivirus security programs are up to dateB. opening all attachments from emails from unknown sendersC. using secure (password protected) networks and backing up your files regularlyD. not using open Wi-Fi (nonpassword, nonencrypted) in public locations BackNext

Which of the following is the primary goal of a ransomware attack?Stealing information and dataDeactivating and destroying devicesShutting down network accessObtaining money through threats

A ransomware attack is when a malicious attacker gains remote access to a computer system, causes damage that makes the system un-usable, and then asks the organisation to pay money (the ransom). If the money is paid then the attacker restores the system to a working state. There are several types of ransomware attack. One type is for the attacker to encrypt critical files on the victim’s system using a symmetric encryption scheme like AES. When the ransom is paid, then the attacker can provide the secret key and the victim can decrypt the files. This question is about such an attack. (We stress that ransomware attacks are evil and often cause harm to ordinary people. The purpose of this question is not to encourage students to do ransomware attacks!) (a) Suppose an organisation always encrypts its files. Does that prevent this ransomware attack? (b) Give at least 3 reasons why is it more convenient for the attacker to just encrypt the files, rather than to download copies of them and then delete the originals on the victim system? (c) Can an organisation recover from such a ransomware attack if it is able to restore the encrypted files from backup? (d) Is there a way for an organisation to detect such a ransomware attack early by checking for AES encrypted files on their hard disks?

When a user turns on the PC on Wednesday, the PC displays a message indicating that all of the user files have been locked. In order to get the files unencrypted, the user is supposed to send an email and include a specific ID in the email title. The message also includes ways to buy and submit bitcoins as payment for the file decryption. After inspecting the message, the technician suspects a security breach occurred. What type of malware could be responsible?ransomwarespywareadwareTrojan

Given the constant evolution of malware threats, maintaining cybersecurity within an organization requires a comprehensive strategy encompassing various countermeasures. Which of the following options best represents a holistic approach to combating malware?Group of answer choicesLimiting internet access to only a few pre-approved websites and disabling email attachments for all users.Conducting regular employee training sessions on security best practices, installing reputable antivirus software on all devices, using firewalls, and performing frequent backups of critical data.Implementing a single, highly-rated antivirus software solution and ensuring it is updated regularly.Relying solely on a state-of-the-art firewall to monitor and control incoming and outgoing network traffic based on predetermined security rules.

Which of the following is actually safe from ransomware?Select one:Mobile DevicesLaptops or DesktopsPhysical DocumentsBackup File Servers