The primary purpose of a digital signature in electronic documents is to ensure authenticity. It provides a way to verify that the document has not been tampered with and that it was indeed signed by the claimed sender. Digital signatures use cryptographic techniques to achieve this.

The most common motivation behind insider threats is personal gain. This can include financial gain, revenge against the organization, or selling sensitive information to third parties. Understanding these motivations is essential for preventing and mitigating insider threats.

This is an example of an Administrative Control. Administrative controls are measures and policies put in place to manage and regulate security practices. In this case, mandating the use of a specific platform is an administrative measure to ensure traceability and accountability when logging incidents.

The attacker is employing the "Tailgating" social engineering technique. This involves following an authorized person into a secure area without their knowledge or consent, often by pretending to be an employee or someone with a legitimate reason to enter the area.

When Alice verifies the digital signature using Bob's public key, it ensures that the document was not tampered with. Digital signatures provide data integrity, and if the signature is valid, it means the document has not been altered since it was signed by Bob.

User Awareness Training is a proactive security measure that educates employees on recognizing and reporting suspicious activities, requests, or messages. This helps organizations prevent falling victim to various forms of cyberattacks, including phishing and social engineering.

A "Trojan Horse" is a type of malware that disguises itself as a benign program but contains malicious code, named after the Greek myth.

"cookie-policy" is not a valid directive in a Content Security Policy (CSP). CSPs define directives to control the sources from which certain types of content can be loaded. The other options like "script-src," "font-src," and "frame-ancestors" are valid directives used in CSP for different content types.

Using the unsafe-inline directive for scripts in a CSP is risky because it allows any inline script to run on the page. This essentially undermines the security benefits of CSP by permitting potentially harmful inline scripts, which is a security vulnerability.

The primary purpose of security compliance is to meet regulatory standards and ensure that an organization follows legal and industry-specific rules and guidelines to protect sensitive data and systems.