CompTIA CAS-004 Practice Test - Questions Answers, Page 44

If the asymmetric private key defined in the write-once read-many (WORM) portion of the System on Chip (SoC) is compromised, the IoT device manufacturer cannot simply replace or update the key through software changes due to the nature of WORM memory. The compromised key would necessitate the production of a new IoT device with a redesigned SoC that includes a new, secure private key. This is because the integrity of the encryption module is fundamental to the device's security, and a compromised key cannot be allowed to persist in the hardware.

Using digital certificates for authentication is a secure method to control access to laptops and other devices. A device certificate can serve as an authenticator by providing a means for the device to prove its identity in a cryptographic manner. This certificate-based authentication is commonly used in enterprise environments for strong authentication.

Calculating the Annual Loss Expectancy (ALE) and conducting a cost-benefit analysis is a critical part of risk management. The ALE will help the company understand the potential losses associated with the server failure per year, which can then be weighed against the cost of mitigating the risk (e.g., replacing the server or implementing redundancies). This analysis will inform the decision on the best course of action to manage the risk associated with the aging server.

The netstat -tulpn command is used to display network connections, routing tables, interface statistics, masquerade connections, and multicast memberships. The -tulpn options specifically show TCP and UDP connections with the process ID and the name that is listening on each port, which would provide the necessary information to identify if FTP is running and on which port without turning the service off. This information can then be used to create a precise firewall rule to prevent the FTP service from being exploited.

The first step in forensic analysis is to collect the most volatile data, which is the information that would be lost when the power is turned off or the system is rebooted. This includes the contents of memory (RAM) and other temporary data that are stored in caches or buffers. A memory dump captures this data and should be done before other less volatile data is collected, like hard drive images or log files, to ensure the most accurate and comprehensive capture of the system's state at the time of the incident.

The primary risk for an organization working with vendors in different time zones is that support might not be available during the organization's regular business hours. This can lead to delays in receiving necessary support or assistance when equipment issues arise, which could be critical if there's an equipment failure.

Information Sharing and Analysis Centers (ISACs) are member-driven organizations, facilitated by the government, that gather and share information on cybersecurity threats, vulnerabilities, and incidents among their members. Engaging with an ISAC would enable the company to collaborate with others in the industry regarding emerging attacks and security threats.

HTTP Strict Transport Security (HSTS) is a web security policy mechanism that helps to protect websites against man-in-the-middle attacks such as protocol downgrade attacks and cookie hijacking. It allows web servers to declare that web browsers (or other complying user agents) should only interact with it using secure HTTPS connections, and never via the insecure HTTP protocol. Enabling HSTS would prevent attackers from redirecting users from a secure site to an unsecure or malicious one.

SELinux contexts are typically made up of several components, including the user identity, role, type (also known as domain or type), and MLS (Multi-Level Security) level. The context format is user:role:type:level. In the given output sys:secret:sec_t:s0, 'sys' represents the user identity, 'secret' is the role, 'sec_t' is the type, and 's0' is the MLS level. Understanding SELinux contexts is critical for managing Mandatory Access Control (MAC) in GNU/Linux systems to protect against unauthorized access.