Pass the ECCouncil ECIH 212-89 Questions and answers with ExamsMirror

Obfuscation is a technique used to make data or code difficult to understand. It is often employed by attackers to conceal the true intent of their code or communications, making it harder for security professionals, automated tools, and others to analyze or detect malicious activity. Obfuscation can involve the use of ambiguous or misleading language, as well as more technical methods such as encoding, encryption, or the use of nonsensical variable names in source code to hide its true functionality.

The port scanning technique that involves resetting the TCP connection between the client and server abruptly before the completion of the three-way handshake, thereby leaving the connection half-open, is known as a Stealth scan (also referred to as a SYN scan). This technique allows the scanner to inquire about the status of a port without establishing a full TCP connection, making the scan less detectible to intrusion detection systems and less likely to be logged by the target. It's a method used to discreetly discover open ports on a target machine without establishing a full connection that would be visible in logs.

As of my last update, the most recent NIST standard for incident response was NIST Special Publication 800-61 Revision 2 (800-61r2), titled "Computer Security Incident Handling Guide." This document provides guidelines for establishing an effective incident response program, including preparation, detection and analysis, containment, eradication, recovery, and post-incident activity.

Cross-site request forgery (CSRF or XSRF) is an attack that tricks the victim's browser into executing unauthorized actions on a website where they are currently authenticated. In this scenario, the attacker exploits the trust that a site has in the user's browser, effectively forcing the browser to perform actions without the user's knowledge or consent. For example, if the user is logged into their bank's website, an attacker could craft a malicious request to transfer funds without the user's direct interaction. CSRF attacks rely on authenticated sessions and typically target state-changing requests to compromise user or application data.

Comprehensive and Detailed Explanation (ECIH-aligned):

In the ECIH Incident Handling lifecycle, once a breach is detected, the IH&R team must focus on analysis and scoping to understand how the attack occurred, what systems were affected, and whether the attacker still has access.

Option D is correct because analyzing logs with Incident Response Automation and Orchestration (IRAO) tools allows rapid correlation of events, identification of attacker entry points, and determination of breach scope. ECIH stresses that zero-day incidents require deep forensic and timeline analysis to ensure complete containment and prevent recurrence.

Options A and C are important but depend on accurate breach understanding. Option B is premature without full incident context.

Therefore, log analysis and origin tracing is the correct primary focus.

Shally has incorporated the Defense-in-depth strategy into the incident response plan for Texas Pvt. Ltd. Defense-in-depth is a layered security approach that involves implementing multiple security measures and controls throughout an information system. This strategy is designed to provide several defensive barriers to protect against threats and attacks, ensuring that if one layer is compromised, others still provide protection. The goal is to create a multi-faceted defense that addresses potential vulnerabilities in various areas, including physical security, network security, application security, and user education.

URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances. This technique involves replacing unsafe ASCII characters with a "%" followed by two hexadecimal digits that represent the character's ASCII code. This is necessary for embedding characters that are not allowed in URLs directly, such as spaces and symbols, or characters that have special meanings within URLs, ensuring that the URL is correctly interpreted by web browsers and servers.

Comprehensive and Detailed Explanation (ECIH-aligned):

This scenario describes an active exploitation of a vulnerable application feature. The ECIH Web Application Incident Handling module emphasizes that when a specific feature is being abused, immediate containment requires removing or disabling that attack surface.

Option B is correct because disabling the vulnerable advanced search feature immediately stops further exploitation while allowing the team to analyze and remediate the flaw safely. ECIH warns against leaving known-vulnerable functionality active during investigation.

Options A and C improve authentication but do not stop exploitation of backend logic. Option D protects stored data but does not prevent further abuse.

Therefore, disabling the exploited feature is the best immediate action.

Comprehensive and Detailed Explanation (ECIH-aligned):

This scenario requires decisive action across containment, analysis, and recovery, as defined in the ECIH incident handling lifecycle.

Option C is correct because isolating affected systems prevents further manipulation, forensic examination identifies scope and method, and restoring from a verified clean backup ensures data integrity. ECIH emphasizes verified restoration only after investigation begins.

Options A, B, and D are premature or speculative and risk misinformation.

Comprehensive and Detailed Explanation (ECIH-aligned):

This scenario involves a high-privilege insider threat, one of the most difficult risks to detect. ECIH emphasizes that senior executives often have broad access, making role-based restrictions impractical.

Option A is correct because advanced employee monitoring and behavioral analytics can detect abnormal access patterns, data exfiltration trends, and deviations from established baselines—even for executives. These tools operate within legal and policy frameworks while providing actionable alerts.

Options B and C reduce efficiency and are easily bypassed. Option D is intrusive and ineffective for digital exfiltration.

ECIH identifies behavioral monitoring as the most effective control for detecting malicious insiders with legitimate access, making Option A correct.