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| Section | Weight | Objectives |
|---|---|---|
| Cryptography and Post-Exploitation | 13% | - Cryptography Concepts
|
| Mobile Platform and IoT Attacks | 7% | - IoT and OT Attacks
|
| Enumeration | 15% | - Enumeration Concepts
|
| Web Application Attacks | 19% | - Hacking Web Servers and Web Applications
|
| System Hacking | 17% | - System Hacking Methodologies
|
| Vulnerability Analysis | 7% | - Vulnerability Assessment Concepts
|
| Information Security and Ethical Hacking Overview | 6% | - Information Security Overview
|
| Wireless Network Attacks | 9% | - Wireless Hacking Methodology
|
| Cloud and Container Attacks | 10% | - Cloud Attacks and Security
|
| Sniffing and Evasion | 10% | - Network Sniffing
|
| Reconnaissance Techniques | 21% | - Footprinting and Reconnaissance
|
| Malware Threats | 8% | - Malware Analysis and Distribution
|
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NEW QUESTION # 777
In a recent cybersecurity incident, Google's response team in the United States investigated a severe attack that briefly disrupted services and customer-facing platforms for approximately 2-3 minutes. Server logs recorded a sudden surge in traffic, peaking at 398 million requests per second, which caused active connections to drop unexpectedly. The attack was traced to numerous compromised devices, likely orchestrated through malicious tools promoted on social media. Based on this information, what type of attack was most likely executed against Google's infrastructure?
Answer: B
Explanation:
The attack generated an extremely high volume of requests per second targeting application services, which is characteristic of an HTTP flood. Such attacks use GET or POST requests to overwhelm web servers and disrupt availability, often launched through botnets.
NEW QUESTION # 778
A financial analytics platform in Newark, New Jersey exposes a search parameter used to filter archived transaction records. During controlled testing, a security consultant submits carefully structured input designed to influence how the backend evaluates filtering conditions.
The application continues to render the standard page layout, but response times fluctuate noticeably when specific logical expressions are introduced. By refining those conditions incrementally, the consultant observes consistent timing differences that align with changes in database evaluation behavior.
The visible output remains unchanged, yet measurable performance variations provide feedback to the tester. Identify the SQL injection technique being demonstrated.
Answer: B
Explanation:
The scenario describes inference of database behavior through observable differences in response time rather than visible output or error messages. This pattern aligns with time-based blind SQL injection, where the attacker derives information by intentionally introducing conditional logic and measuring how query execution time changes.
NEW QUESTION # 779
Emma, an ethical hacker at a Chicago-based healthcare provider, is performing a penetration test on the organization ' s patient record system following a recent data breach. During her investigation, she discovers that attackers gained access to a large volume of encrypted patient records but had no knowledge of the original data or encryption keys. Emma observes that the system uses a block cipher and suspects the attackers may have applied a cryptanalytic method that examines encrypted outputs in bulk to detect structural or statistical patterns in the encrypted data.
Which cryptanalysis technique should Emma investigate to assess the system ' s vulnerability in this scenario?
Answer: C
Explanation:
The correct answer is D, ciphertext-only attack, because the attackers possess only encrypted data and have neither the encryption key nor any confirmed samples of the original plaintext. In CEH-aligned cryptography concepts, cryptanalytic attacks are categorized by what information and capabilities the attacker has. A ciphertext-only attack is the most constrained model: the attacker attempts to infer the plaintext or key by analyzing ciphertext alone, often leveraging statistical properties, repetitions, formatting assumptions, and structural patterns that may leak information when encryption is misused.
The scenario highlights that the attacker "examines encrypted outputs in bulk" to detect "structural or statistical patterns." That wording maps directly to ciphertext-only analysis: looking for patterns caused by weak modes of operation, poor IV/nonce handling, deterministic encryption, repeated blocks (common in ECB mode), predictable headers, or consistent record templates. With block ciphers, large datasets increase the chance that repeated plaintext blocks produce repeated ciphertext blocks if the system uses an unsafe mode or reuses IVs, allowing an attacker to correlate records, identify fields, or sometimes recover content when combined with protocol or file-format knowledge.
The other options require more attacker capability than the prompt provides. Known-plaintext attacks require some plaintext-ciphertext pairs. Chosen-plaintext attacks require the ability to encrypt attacker-chosen inputs.
Chosen-ciphertext attacks require a decryption oracle or the ability to submit ciphertext for decryption. Since none of those are present here, Emma should evaluate ciphertext-only exposure and specifically validate the cipher mode, IV/nonce uniqueness, padding behavior, and whether encryption is semantically secure for stored patient records.
NEW QUESTION # 780
During an internal security assessment of a medium-sized enterprise network, a security analyst notices an unusual spike in ARP traffic. Closer inspection reveals that one particular MAC address is associated with multiple IP addresses across different subnets. The ARP packets were unsolicited replies rather than requests, and several employees from different departments have reported intermittent connection drops, failed logins, and broken intranet sessions. The analyst suspects an intentional interference on the local network segment.
What is the most likely cause of this abnormal behavior?
Answer: D
Explanation:
CEH v13 explains that ARP poisoning (also known as ARP spoofing) occurs when an attacker sends forged ARP replies across the network to associate their MAC address with multiple IP addresses, tricking hosts into sending traffic through the attacker's machine. This results in routing inconsistencies, intermittent connectivity, failed logins, and degraded intranet performance-exactly the symptoms described. ARP poisoning typically involves unsolicited ARP replies, which overwrite legitimate ARP cache entries. CEH emphasizes that ARP-based attacks are common on LANs because ARP lacks authentication, allowing attackers to impersonate gateways or key hosts. DHCP snooping misconfigurations (Option B) affect IP allocation, not ARP mappings. Legitimate ARP refreshes (Option C) are request-based and do not involve flooding unsolicited replies. Port security restrictions (Option D) block MAC anomalies, not create them.
Therefore, ARP poisoning is the correct root cause.
NEW QUESTION # 781
What is CVSS used for?
Answer: C
Explanation:
CVSS (Common Vulnerability Scoring System) is used to measure and standardize the severity of security vulnerabilities based on their impact and exploitability.
NEW QUESTION # 782
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