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NEW QUESTION # 14
Rebecca Gibel has been working as a cloud security engineer in an IT company for the past 5 years. Her organization uses cloud-based services. Rebecca's organization contains personal information about its clients,which is encrypted and stored in the cloud environment. The CEO of her organization has asked Rebecca to delete the personal information of all clients who utilized their services between 2011 and 2015. Rebecca deleted the encryption keys that are used to encrypt the original data; this made the data unreadable and unrecoverable. Based on the given information, which deletion method was implemented by Rebecca?
Answer: A
Explanation:
Crypto-shredding is the method of 'deleting' encrypted data by destroying the encryption keys. This method is particularly useful in cloud environments where physical destruction of storage media is not feasible. By deleting the keys used to encrypt the data, the data itself becomes inaccessible and is effectively considered deleted.
Here's how crypto-shredding works:
Encryption: Data is encrypted using cryptographic keys, which are essential for decrypting the data to make it readable.
Key Management: The keys are managed separately from the data, often in a secure key management system.
Deletion of Keys: When instructed to delete the data, instead of trying to erase the actual data, the encryption keys are deleted.
Data Inaccessibility: Without the keys, the encrypted data cannot be decrypted, rendering it unreadable and unrecoverable.
Compliance: This method helps organizations comply with data protection regulations that require secure deletion of personal data.
Reference:
A technical paper discussing the concept of crypto-shredding as a method for secure deletion of data in cloud environments.
An industry article explaining how crypto-shredding is used to meet data privacy requirements, especially in cloud storage scenarios.
NEW QUESTION # 15
Being a cloud security administrator, Jonathan is responsible for securing the large-scale cloud infrastructure of his organization SpectrumIT Solutions. The organization has to implement a threat detection and analysis system so that Jonathan would receive alerts regarding all misconfigurations and network intrusions in the organization's cloud infrastructure. Which AWS service would enable him to use to receive alerts related to risks?
Answer: C
Explanation:
Amazon GuardDuty: It is a threat detection service that continuously monitors for malicious activity and unauthorized behavior across your AWS accounts and workloads1.
Continuous Monitoring: GuardDuty keeps an eye on the cloud environment for potential threats by analyzing various data sources, including VPC flow logs, CloudTrail event logs, and DNS logs1.
Alerts for Risks: When GuardDuty detects a potential threat or misconfiguration, it generates detailed security findings, which can be used to notify administrators like Jonathan of the risks1.
Machine Learning and Threat Intelligence: The service uses machine learning and integrated threat intelligence to identify and classify threats, providing actionable insights for remediation1.
Integration with AWS Services: GuardDuty can integrate with other AWS services such as Amazon SNS for notifications, enabling automated responses to detected threats1.
Reference:
AWS's official documentation on Amazon GuardDuty1.
NEW QUESTION # 16
Luke Grimes has recently joined a multinational company as a cloud security engineer. The company has been using the AWS cloud. He would like to reduce the risk of man-in-the-middle attacks in all Redshift clusters.
Which of the following parameters should Grimes enable to reduce the risk of man-in-the-middle attacks in all Redshift clusters?
Answer: A
Explanation:
To reduce the risk of man-in-the-middle attacks in all Redshift clusters, Luke Grimes should enable the require_ssl parameter. This setting ensures that connections to Amazon Redshift clusters are required to use encryption in transit, which is crucial for securing data and preventing eavesdropping or manipulation of network traffic.
SSL (Secure Sockets Layer): SSL is a standard security technology for establishing an encrypted link between a server and a client-typically a web server (website) and a browser, or a mail server and a mail client1.
require_ssl Parameter: By setting the require_ssl parameter to true, Luke will enforce that all connections to the Redshift clusters use SSL encryption. This helps to protect against man-in-the-middle attacks by encrypting the data as it travels between the client and the Redshift cluster2.
Implementation Steps:
Navigate to the Redshift service in the AWS Management Console.
Select the appropriate cluster and go to its properties.
Under the database configurations, locate the Parameter group settings.
Edit the parameters and set require_ssl to true.
Save the changes to enforce SSL for all connections to the cluster.
Reference:
AWS Security Hub: Amazon Redshift controls1.
AWS RedShift Enforce SSL | Security Best Practice2.
NEW QUESTION # 17
Gabriel Bateman has been working as a cloud security engineer in an IT company for the past
5 years. Owing to the recent onset of the COVID-19 pandemic, his organization has given the provision to work from home to all employees. Gabriel's organization uses Microsoft Office 365 that allows all employees access files, emails, and other Office programs securely from various locations on multiple devices. Who among the following is responsible for patch management in Microsoft Office 365?
Answer: B
Explanation:
In the case of Software as a Service (SaaS) offerings like Microsoft Office 365, the cloud provider (Microsoft) is responsible for managing the underlying infrastructure, including patch management. The customer (Gabriel's organization) is responsible for managing data, user access, and usage configurations, but not the patching of the software itself.
NEW QUESTION # 18
Kevin Ryan has been working as a cloud security engineer over the past 2 years in a multinational company, which uses AWS-based cloud services. He launched an EC2 instance with Amazon Linux AMI. By disabling password-based remote logins, Kevin wants to eliminate all possible loopholes through which an attacker can exploit a user account remotely. To disable password-based remote logins, using the text editor, Kevin opened the /etc/ssh/sshd_config file and found the #PermitRootLogin yes line. Which of the following command lines should Kevin use to change the #PermitRootLogin yes line to disable password-based remote logins?
Answer: B
Explanation:
To disable password-based remote logins for the root account on an EC2 instance running Amazon Linux AMI, Kevin should modify the SSH configuration as follows:
Open SSH Configuration: Using a text editor, open the /etc/ssh/sshd_config file.
Find PermitRootLogin Directive: Locate the line #PermitRootLogin yes. The # indicates that the line is commented out.
Modify the Directive: Change the line to PermitRootLogin without-password. This setting allows root login using authentication methods other than passwords, such as SSH keys, while disabling password-based root logins.
Save and Close: Save the changes to the sshd_config file and exit the text editor.
Restart SSH Service: To apply the changes, restart the SSH service by running sudo service sshd restart or sudo systemctl restart sshd, depending on the system's init system.
Reference:
The PermitRootLogin without-password directive in the SSH configuration file is used to enhance security by preventing password-based authentication for the root user, which is a common target for brute force attacks. Instead, it requires more secure methods like SSH key pairs for authentication. This change is part of best practices for securing SSH access to Linux servers.
NEW QUESTION # 19
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