Explanation
DNSSEC is an extension to the regular DNS protocol that utilizes digital signing of DNS query results, which can be verified to come from an authoritative source. This verification mitigates the ability for a rogue DNS server to be used to spoof query results and to direct users to malicious sites. DNSSEC provides for the verification of the integrity of DNS queries. It does not provide any protection from snooping or data exposure. Although it may help lessen account hijacking by preventing users from being directed to rogue sites, it cannot by itself eliminate the possibility.

CASB acts as an intermediary between users and cloud services, providing visibility, access control, data protection, and threat detection. It helps organizations monitor usage and enforce policies across multiple cloud platforms.

Explanation
Data masking does not support authentication in any way. All the others are excellent use cases for data masking.

Explanation
An injection attack is where a malicious actor will send commands or other arbitrary data through input and data fields with the intent of having the application or system execute the code as part of its normal processing and queries. This can trick an application into exposing data that is not intended or authorized to be exposed, or it could potentially allow an attacker to gain insight into configurations or security controls. Missing function-level access control exists where an application only checks for authorization during the initial login process and does not further validate with each function call. Cross-site request forgery occurs when an attack forces an authenticated user to send forged requests to an application running under their own access and credentials. Cross-site scripting occurs when an attacker is able to send untrusted data to a user's browser without going through validation processes.