212-89 Exam Questions & Answers

An Inappropriate Usage incident refers to instances where computing resources are misused or abused, often violating organizational policies or laws. While access-control attacks, reconnaissance attacks, and denial-of-service (DoS) attacks represent different types of external threats or methods of attack, an Insider Threat is an example of inappropriate usage. Insider threats come from individuals within the organization, such as employees or contractors, who misuse their access to harm the organization's interests. This can include stealing confidential information, intentionally disrupting systems, or other malicious activities that leverage their legitimate access to the organization's resources.

Public Key Infrastructure (PKI) is a framework used to manage digital certificates and public-key encryption. It enables secure electronic transfer of information for a range of network activities such as e-commerce, internet banking, and confidential email. PKI is fundamental to the management of encryption keys and digital certificates, ensuring the secure exchange of data over networks and verification of identity.

Eradication is the step in the incident handling and response process where the root cause of an incident is removed, and measures are taken to close all attack vectors to prevent similar incidents in the future. After an incident has been properly contained to stop it from spreading or causing further damage, the eradication phase focuses on eliminating the source of the incident. This could involve removing malware, closing vulnerabilities, or implementing stronger security measures to address the exploitation paths used by the attacker.

In the scenario with Raven, notifying service providers and developers of affected resources is part of the actions taken to address the root cause of the incident. This ensures that any vulnerabilities or issues that contributed to the incident are fixed. By working to remove the root cause and secure the system against similar attacks, Raven is effectively implementing the eradication step of the incident handling process.

An inappropriate usage incident involves misuse of the organization's resources or violations of its acceptable use policies. Sam's actions, where he sends emails to third-party organizations with a spoofed email address of his employer, constitute misuse of the organization's email system and misrepresentation of the organization. This behavior can harm the organization's reputation, violate policy, and potentially lead to legal consequences. Inappropriate usage incidents can range from unauthorized use of systems for personal gain to the dissemination of unapproved content.

Explanation (aligned to threat intelligence & detection):

A high-interaction honeypot is designed to attract and engage adversaries, providing realistic services so defenders can observe tactics, techniques, and procedures (TTPs) with higher fidelity than a low-interaction decoy. The goal is not to ''stop'' attacks directly, but to detect and learn: identify scanning patterns, credential stuffing attempts, exploit chains, payload delivery methods, and post-exploitation behaviors such as enumeration and lateral movement. That intelligence is then used to improve controls---signatures, detections, segmentation, and hardening priorities.

Sandboxing (B) is typically about detonating suspicious files/URLs to observe behavior in a controlled environment; it's not what a DMZ honeypot primarily does. ACL rules and DDoS blocking (C) are traffic filtering measures, not deception telemetry. Backup/recovery testing (D) is resilience planning, unrelated to studying attacker behavior in real-time.

In incident handling terms, honeypots support the ''preparation'' and ''detection'' posture---expanding visibility, generating early warning, and enriching threat intelligence. They can also reduce risk by luring opportunistic attackers away from production assets, but their primary value is behavioral observation and evidence collection.