CompTIA CAS-005 Exam With Confidence Using Practice Dumps

[Reference:CompTIA SecurityX CAS-005, Domain 2.0: Apply secure media sanitization methods appropriate for device types such as SSDs., ===========, ]

[Reference: CASP+ objectives often emphasize supply chain security due to its growing importance. The scenario directly relates to this type of attack, as the registry helps ensure that software packages haven't been tampered with during the supply chain process., B. Cipher substitution attack: This is a cryptographic attack focused on replacing ciphertext with a different ciphertext to deduce the key. It's not relevant to the scenario., C. Side-channel analysis: This attack involves gathering information from the physical implementation of a system (e.g., timing, power consumption) rather than exploiting the algorithm itself. It's not applicable here., D. On-path attack (formerly man-in-the-middle): This attack involves intercepting and potentially altering communication between two parties. While important, it's not theprimary focus of the registry., E. Pass-the-hash attack: This attack involves using a stolen hash of a user's password to authenticate without needing the actual password. It's unrelated to software package integrity., Why A is the Correct Answer:, A supply chain attack is exactly what the organization is trying to mitigate. By creating a registry of known-good software packages and their hashes, they can verify that the packages they are using are legitimate and haven't been altered., If an attacker were to compromise a software package in the supply chain, the hash of the altered package would not match the hash in the organization's registry. This would immediately alert the organization to a potential compromise., CASP+ Relevance: This aligns with the CASP+ exam objectives, which emphasize the importance of risk management, threat intelligence, and implementing security controls to address various attack vectors, including supply chain risks., How the Registry Works (Elaboration based on CASP+principles):, Hashing: When a package is vetted, a cryptographic hash function (like SHA-256) is used to generate a unique "fingerprint" (the hash) of the package's contents., Verification: Before installing or using a package, its hash is calculated and compared to the hash stored in the registry. A match confirms the package's integrity. A mismatch indicates tampering., Incident Response: If a vulnerability is discovered in a commonly used package, the registry helps the organization quickly identify which systems are affected based on the dependency list and the stored hashes., In conclusion, maintaining a registry of software dependencies with hashes is a crucial security control that directly addresses the threat of supply chain attacks by ensuring the integrity and authenticity of software packages. The use of hash functions for verification is a common practice in security and is emphasized in the CASP+ material., , ]

[Reference: This aligns with the historical evolution of OT security. Initially, security was based on physical isolation rather than network security controls. This is a common topic in CASP+ discussions on OT security challenges., B. communicating over distributed environments: While OT systems can be distributed, the core design assumption, especially for older systems, wasn't centered around interconnectivity in the way modern IT systems are., C. untrustworthy users and systems being present: This is a more modern security principle (Zero Trust). Older OT systems often operated under a model of implicit trust within their isolated environment., D. an available EtherneVIP network stack for flexibility: Ethernet/IP is a relatively newer industrial protocol. Older OT systems often used proprietary or less flexible communication protocols. Also, there is no such thing as EtherneVIP., E. anticipated eavesdropping from malicious actors: While security was a concern, the primary threat model for older, isolated OT systems didn't heavily emphasize external malicious actors due to the assumed isolation., Why A is the Correct Answer:, Air Gap: The concept of an air gap (physical isolation) was the cornerstone of security for many legacy OT systems. These systems were not connected to the internet or corporate networks, making them less susceptible to remote attacks., Legacy Protocols: Older OT systems often used proprietary or serial communication protocols, not designed for internet connectivity., Implicit Trust: Within the isolated environment, there was often an assumption of trust among the connected components., CASP+ Relevance: The challenges of securing legacy OT systems, especially in the face of increasing connectivity, are a key area of focus in CASP+. Understanding the historical context and the shift in security paradigms is crucial., Modern OT Security Considerations (Elaboration):, Convergence: Today, the lines between IT and OT are blurring. OT systems are increasingly connected to corporate networks and the internet, necessitating a shift from isolation-based security to a more comprehensive approach., Threat Landscape: Modern OT systems face a wider range of threats, including targeted attacks from sophisticated actors., Security Controls: Modern OT security involves implementing network segmentation, intrusion detection, access controls, and other measures to protect against these evolving threats., In conclusion, the primary design assumption for many older OT systems was that they would operate in isolated or disconnected environments. This historical context is important for understanding the security challenges faced by organizations today as they integrate these legacy systems into modern, connected environments. This is a core concept discussed in CASP+ in the context of OT security and risk management., =================, , ]