Final answer:
The correct answer is 4) Penetration. Authentication, encryption, and firewalls are testable WebApp security elements.
Step-by-step explanation:
The correct answer is 4) Penetration.
Authentication, encryption, and firewalls are all testable WebApp security elements.
Authentication refers to the process of verifying the identity of a user or system. It ensures that only authorized individuals or entities have access to the web application.
Encryption involves converting data into a form that cannot be easily understood by unauthorized users. It protects sensitive information from being intercepted and accessed.
Firewalls are network security systems that monitor and control incoming and outgoing traffic. They act as a barrier between a trusted internal network and an untrusted external network, providing protection against unauthorized access.
Penetration is not a testable WebApp security element. It refers to the process of deliberately attempting to breach the security measures of a web application in order to discover vulnerabilities or weak points. It is a technique used by security professionals to identify and address potential security risks.