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| Section | Objectives |
|---|---|
| System Hacking | - Gaining access and privilege escalation - Malware threats and system exploitation |
| Web and Application Security | - Web application hacking techniques |
| Cloud and IoT Security | - Cloud computing security concepts - IoT security fundamentals |
| Cryptography | - Encryption, hashing, and cryptanalysis |
| Reconnaissance Techniques | - Scanning networks and enumeration - Footprinting and information gathering |
| Introduction to Ethical Hacking | - Ethical hacking concepts and methodology |
| Wireless and Mobile Security | - Mobile platform vulnerabilities - Wireless network attacks |
| Network Attacks | - Denial of Service (DoS/DDoS) - Sniffing and session hijacking |
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NEW QUESTION # 729
While scanning with Nmap, Patin found several hosts which have the IP ID of incremental sequences. He then decided to conduct: nmap -Pn -p- -si kiosk.adobe.com www.riaa.com. kiosk.adobe.com is the host with incremental IP ID sequence. What is the purpose of using "-si" with Nmap?
Answer: C
Explanation:
Once a suitable zombie has been found, performing a scan is easy. Simply specify the zombie hostname to the
-sI option and Nmap does the rest. Example 5.19 shows an example of Ereet scanning the Recording Industry Association of America by bouncing an idle scan off an Adobe machine named Kiosk.
Example 5.19. An idle scan against the RIAA
# nmap -Pn -p- -sI kiosk.adobe.com www.riaa.com
Starting
Nmap ( http://nmap.org )
Idlescan using zombie kiosk.adobe.com (192.150.13.111:80); Class: Incremental Nmap scan report for 208.225.90.120 (The 65522 ports scanned but not shown below are in state: closed) Port State Service
21/tcp open ftp
25/tcp open smtp
80/tcp open http
111/tcp open sunrpc
135/tcp open loc-srv
443/tcp open https
1027/tcp open IIS
1030/tcp open iad1
2306/tcp open unknown
5631/tcp open pcanywheredata
7937/tcp open unknown
7938/tcp open unknown
36890/tcp open unknown
Nmap done: 1 IP address (1 host up) scanned in 2594.47 seconds
NEW QUESTION # 730
Several months prior to a confirmed compromise, security telemetry at a semiconductor manufacturer in Phoenix, Arizona showed systematic intelligence gathering focused on executive leadership, research engineers, and publicly exposed infrastructure.
Subsequent investigation determined that the adversary had assembled customized exploit frameworks, tested malware variants against commercial defensive products in isolated environments, and mapped externally accessible services associated with the organization.
These activities were part of a coordinated strategy developed well before any credential abuse or lateral movement was observed.
Determine the APT lifecycle stage represented by these actions.
Answer: B
Explanation:
The activities described--gathering intelligence on targets, building and testing exploit tools, and mapping exposed infrastructure before any compromise--reflect the early planning and resource development phase of an APT operation, where the attacker prepares capabilities and recon before launching active intrusion attempts.
NEW QUESTION # 731
A penetration tester targets a company's executive assistants by referencing upcoming board meetings in an email requesting access to confidential agendas. What is the most effective social engineering technique to obtain the necessary credentials without raising suspicion?
Answer: D
Explanation:
A highly personalized email that references specific, legitimate events leverages trust and context, which significantly increases credibility and reduces suspicion, making it the most effective social engineering approach for obtaining credentials from executive assistants.
NEW QUESTION # 732
During a red team engagement at a logistics company in Dallas, Texas, ethical hacker Priya Nair was assessing exposed services within the internal network. She discovered that a service was accessible from external segments and allowed unauthenticated systems to establish sessions and interact with shared resources.
Further analysis revealed that the service relied on legacy communication channels commonly associated with remote file and printer access, making it susceptible to unauthorized enumeration and data exposure. Priya recommended implementing a control that would prevent external systems from directly interacting with this service at the network level.
Which enumeration countermeasure would be most effective in mitigating this exposure?
Answer: B
Explanation:
TCP ports 139 and 445 are associated with Windows file and printer sharing. Port 139 supports SMB over the legacy NetBIOS Session Service, while port 445 carries SMB directly over TCP. If these services are reachable from untrusted or external segments, attackers may attempt share enumeration, account discovery, relay attacks, password guessing, or exploitation of SMB vulnerabilities.
The required countermeasure is to block or tightly restrict these ports at firewalls and segmentation boundaries. Option A uses the word "disable," but its security intent is correct: systems outside approved management or file-sharing zones should not be able to communicate directly with TCP 139 or 445.
Microsoft's SMB traffic guidance recommends restricting SMB traffic and blocking unnecessary inbound and outbound access, particularly at perimeter boundaries.
Changing community strings applies to SNMP enumeration, which commonly involves UDP ports 161 and
162. Blocking port 2049 protects NFS rather than Windows SMB or NetBIOS file sharing. SSL or STARTTLS may protect supported application traffic from interception, but it does not remove the externally exposed enumeration surface and is not the standard control for legacy SMB exposure. Therefore, restricting TCP 139 and 445 is the most directly effective countermeasure.
NEW QUESTION # 733
While waiting at a crowded metro interchange during peak evening hours, Daniel Reyes was conducting an authorized mobile security assessment for FinEdge Banking. As part of the evaluation, he observed a targeted campaign where several employees received text messages appearing to originate from the organization's internal notification system. The messages conveyed a sense of urgency, instructing recipients to verify account activity through a shortened link embedded within the message.
Upon interacting with the link in a controlled environment, Daniel noted that it redirected users to a convincing replica of the official portal, where login credentials and sensitive financial details were requested.
Multiple users who followed the instructions unknowingly submitted their information, which was immediately transmitted to an external server controlled by the attacker.
What type of mobile attack is being demonstrated in this scenario?
Answer: A
Explanation:
Smishing is phishing conducted through SMS or a comparable mobile text-messaging channel. The attacker impersonates a trusted organization, creates urgency, and includes a link leading to a fraudulent portal. The objective is to persuade recipients to disclose credentials, payment details, or other sensitive information.
Every principal element of smishing is present in this scenario: deceptive text messages, organizational impersonation, an urgent request, a shortened link, and a credential-harvesting website.
Shortened URLs are especially useful to attackers because they conceal the destination domain from the recipient. A convincing replica of the legitimate portal then exploits the user's trust in the apparent sender.
Effective countermeasures include mobile-message filtering, security-awareness training, independent verification of urgent requests, multifactor authentication, and instructing users to access important services through known bookmarks or official applications instead of embedded links.
SIMjacker exploits specially constructed SIM Toolkit instructions and does not require a counterfeit login page. Call spoofing falsifies caller-identification information during telephone calls. OTP hijacking targets one-time passwords through interception, social engineering, malware, or redirection. The attack described is therefore specifically smishing. The Federal Communications Commission identifies fraudulent text messages containing deceptive links as a characteristic smishing technique.
NEW QUESTION # 734
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