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| Section | Objectives |
|---|---|
| Topic 1: System Hacking | - Gaining access and privilege escalation - Malware threats and system exploitation |
| Topic 2: Web and Application Security | - Web application hacking techniques |
| Topic 3: Wireless and Mobile Security | - Mobile platform vulnerabilities - Wireless network attacks |
| Topic 4: Reconnaissance Techniques | - Scanning networks and enumeration - Footprinting and information gathering |
| Topic 5: Cryptography | - Encryption, hashing, and cryptanalysis |
| Topic 6: Cloud and IoT Security | - IoT security fundamentals - Cloud computing security concepts |
| Topic 7: Introduction to Ethical Hacking | - Ethical hacking concepts and methodology |
| Topic 8: Network Attacks | - Sniffing and session hijacking - Denial of Service (DoS/DDoS) |
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NEW QUESTION # 570
Kevin and his friends are going through a local IT firm's garbage. Which of the following best describes this activity?
Answer: D
Explanation:
Dumpster diving is the practice of searching through discarded materials or trash to obtain sensitive information such as documents, passwords, network diagrams, or other valuable data that can aid an attacker.
NEW QUESTION # 571
A regional healthcare provider in Phoenix, Arizona, observes severe degradation in the availability of its patient portal during a controlled resilience exercise.
Network telemetry reveals that inbound traffic is dramatically larger than the outbound requests originating from the network. Packet inspection shows that many incoming responses are associated with time- synchronization services hosted on external infrastructure.
Analysts also notice that the requests initiating these responses appear to originate from the healthcare provider ' s own address space even though the organization did not actually issue them. Large responses generated by multiple external servers rapidly saturate the organization ' s Internet connection.
Determine the attack technique that most accurately explains this scenario.
Answer: B
Explanation:
NTP Amplification Attack is correct because the attacker spoofs the victim ' s source IP address when sending relatively small UDP requests to publicly reachable Network Time Protocol servers. Those servers then send larger responses to the victim, providing both reflection and bandwidth amplification. CISA specifically identifies NTP among UDP protocols abused for amplification and explains that spoofed UDP source addresses cause amplifier servers to direct their responses toward the victim. The decisive clues are time- synchronization servers, spoofed victim addresses, numerous third-party responders, and inbound traffic substantially exceeding the attacker ' s initiating request volume. A generic UDP flood usually sends attack packets directly to the victim. ICMP flooding uses ICMP traffic, while Ping of Death relies on malformed or oversized ICMP packets. The described reflection/amplification mechanism specifically identifies NTP amplification.
NEW QUESTION # 572
A penetration tester is evaluating a web application that uses HTTPS, secure cookies, and implements multi factor authentication to prevent session hijacking. To hijack a legitimate user's session without triggering security alerts, which advanced technique should the tester employ?
Answer: A
Explanation:
Exploiting a browser zero-day allows the attacker to operate within the user's trusted browser context after authentication, enabling interception or manipulation of session data without breaking HTTPS, triggering MFA challenges, or generating anomalous server-side indicators, making it the most stealthy and effective approach.
NEW QUESTION # 573
Which attack abuses scheduled tasks?
Answer: C
Explanation:
Attackers abuse scheduled tasks to maintain persistence by automatically executing malicious code at specific times or during system events, allowing continued access to the compromised system.
NEW QUESTION # 574
An attacker decided to crack the passwords used by industrial control systems. In this process, he employed a loop strategy to recover these passwords. He used one character at a time to check whether the first character entered is correct; if so, he continued the loop for consecutive characters. If not, he terminated the loop.
Furthermore, the attacker checked how much time the device took to finish one complete password authentication process, through which he deduced how many characters entered are correct.
What is the attack technique employed by the attacker to crack the passwords of the industrial control systems?
Answer: D
Explanation:
The described method is a classic example of a Side-Channel Attack, specifically a Timing Attack.
Key characteristics:
* It exploits variations in response time from a system to infer sensitive information, such as the correct number of characters in a password.
* In this scenario, if a correct character causes a longer processing time, the attacker can deduce the correct sequence iteratively.
According to CEH v13:
* Side-channel attacks do not directly break encryption but rely on observing system behavior like timing, power consumption, or electromagnetic leaks.
* These attacks are effective against poorly implemented authentication mechanisms or embedded systems like ICS/SCADA.
Incorrect Options:
* B. Denial-of-service is aimed at making systems unavailable, not extracting credentials.
* C. HMI-based attacks involve manipulating the human-machine interface of ICS systems.
* D. Buffer overflow exploits memory handling flaws, not timing behavior.
Reference - CEH v13 Official Courseware:
Module 20: Cryptography
Section: "Cryptanalysis and Side-Channel Attacks"
Subsection: "Timing Attacks and Password Recovery"
NEW QUESTION # 575
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