GIAC Open Source Intelligence Free Sample Questions

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GOSI Sample Questions

  1. Question 1

    Q1

    A security analyst is conducting an OSINT investigation into a potential threat actor group. The analyst has completed the planning phase and identified the intelligence requirements. According to the standard Intelligence Cycle, which phase should the analyst proceed to next, and what is the primary objective of this phase?

    flowchart LR A[Planning & Direction] --> B[?] B --> C[Processing] C --> D[Analysis & Production] D --> E[Dissemination]
    Show answer & explanation

    Correct answer: A

    After Planning & Direction, the next phase is Collection. In this phase, the analyst gathers raw data from open sources (such as social media, public records, and technical databases) that addresses the specific intelligence requirements defined in the planning phase.

  2. Question 2

    Q2

    During an investigation, an analyst discovers a target's personal blog. To maintain operational security (OPSEC) and prevent the target from identifying the investigator's real IP address, the analyst uses a VPN. However, the analyst is concerned about WebRTC leaks exposing their true IP. Which of the following actions is the MOST effective way to mitigate WebRTC leaks while browsing?

    Show answer & explanation

    Correct answer: A

    WebRTC can bypass VPN tunnels and reveal the local IP address even when a VPN is active. The most effective mitigation is to disable WebRTC in the browser (e.g., media.peerconnection.enabled = false in Firefox) or use a trusted extension to block it.

  3. Question 3

    Q3

    Which Google search operator would an analyst use to find Excel spreadsheets containing the word 'budget' located specifically on government websites ending in .gov?

    Show answer & explanation

    Correct answer: A

    The 'site:gov' operator restricts results to government domains, 'filetype:xls' (or xlsx) restricts results to Excel files, and 'budget' searches for the keyword. The correct syntax combines these.

  4. Question 4

    Q4

    An OSINT investigator is analyzing a target's presence on a specific social media platform. The investigator needs to determine the exact date and time a user account was created to correlate it with known events. The platform does not display this information on the profile page. Which technique would most reliably provide this data without interacting with the target?

    Show answer & explanation

    Correct answer: A

    Many social media platforms (like Twitter/X, Discord, LinkedIn) generate User IDs sequentially or using time-based algorithms (like Snowflakes). Extracting this ID allows an analyst to calculate or look up the precise creation timestamp.

  5. Question 5

    Q5

    You are investigating a shell company suspected of money laundering. You have identified a website purportedly belonging to the company. Which of the following records would be MOST valuable for identifying the underlying infrastructure provider and potentially the real geographic location of the server, even if the domain uses a privacy protection service?

    Show answer & explanation

    Correct answer: A

    The SOA record often contains the primary nameserver and the email address of the administrator (sometimes unredacted or pointing to a specific provider's pattern), which can reveal the true hosting provider or infrastructure owner even if WHOIS is redacted.

  6. Question 6

    Q6Multiple answers

    Select TWO primary reasons why an OSINT investigator would use a 'sock puppet' account during a social media investigation. (Select TWO)

    Show answer & explanation

    Correct answers: A, B

    The primary purpose of a sock puppet is OPSEC—preventing attribution back to the investigator or their employer.

    Many platforms restrict visibility of content (like friends lists or full profiles) to logged-in users or those with some connection. A sock puppet facilitates this access.

  7. Question 7

    Q7

    A multinational corporation has suffered a data breach. An OSINT analyst is tasked with determining if any executive credentials have been exposed on the dark web. The analyst decides to use an automated tool to search multiple paste sites and marketplaces. Which of the following is the MOST critical technical constraint the analyst must configure to avoid being blocked by these services?

    Show answer & explanation

    Correct answer: A

    Automated scrapers that send requests too quickly will trigger Web Application Firewalls (WAFs) or anti-bot defenses. Configuring appropriate delays (throttling) is essential for sustained collection.

  8. Question 8

    Q8

    True or False: When conducting a 'passive' OSINT investigation on a target organization's network infrastructure, sending packets directly to the target's firewall to banner grab is considered an acceptable passive technique.

    Show answer & explanation

    Correct answer: B

    This is False. Sending packets directly to a target (Active Scanning) generates logs on their systems and alerts them to the investigation. Passive OSINT relies on third-party sources (like Shodan, Censys, or WHOIS) where the investigator does not touch the target infrastructure directly.

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