Showing posts with label username enumeration. Show all posts
Showing posts with label username enumeration. Show all posts

Mastering OSINT: A Deep Dive into Username and Account Enumeration

There are ghosts in the machine, whispers of digital identities scattered across the vast expanse of the internet. Every leaked database, every social media profile, every forum post is a breadcrumb. As an OSINT operative, your job is to follow that trail, to connect the dots and build a comprehensive picture of your target. Today, we're not just looking for information; we're hunting usernames and accounts, the digital keys to a user's online presence. This is an intelligence gathering operation, and for the seasoned analyst, it's a game of meticulous dissection.
The objective is simple: enumerate as many online accounts and associated usernames as possible for a given individual or entity. This forms the bedrock of most OSINT investigations. Whether you're a penetration tester probing an organization's external footprint, a bug bounty hunter looking for attack vectors, or an intelligence analyst building a profile, understanding how to systematically uncover these digital footprints is paramount. Forget the Hollywood portrayal; real-world OSINT is a grind, a chess match played across hundreds of platforms. The data you collect isn't just trivia; it's actionable intelligence. A leaked forum username might reveal a user's technical expertise or interests. A forgotten social media profile could expose personal contacts or even internal company information. Each piece of data, seemingly innocuous on its own, becomes a critical node when interconnected.

The Intelligence Imperative: Why Username Enumeration Matters

In the shadowy world of cybersecurity, information is currency. For the adversary, a comprehensive list of usernames and associated accounts is the first step towards social engineering, credential stuffing, or identifying potential targets for more sophisticated attacks. For the defender, understanding these enumeration techniques is crucial for hardening your digital perimeter and protecting your users. The modern digital landscape is a tapestry woven from countless online services. Users, often unknowingly, create a unique digital fingerprint across these platforms. Identifying these fingerprints requires a systematic approach, moving beyond simple Google searches to leverage specialized tools and methodologies.

The Anatomy of a Digital Footprint

Every online interaction leaves a trace. Understanding these traces is the core of OSINT. Consider the following common digital footprints:
  • **Email Addresses**: Often the primary identifier across services. Variations and common patterns can be exploited.
  • **Usernames**: The most direct identifier on many platforms. Re-use of usernames across different sites is a significant vulnerability.
  • **Phone Numbers**: Increasingly used for account recovery and verification, making them a prime target for enumeration.
  • **Social Media Profiles**: Facebook, Twitter, LinkedIn, Instagram, GitHub, Reddit – each platform offers a wealth of information.
  • **Online Forums and Communities**: Technical forums, gaming communities, and niche interest groups can reveal user activity and associated handles.
  • **Publicly Available Records**: Business registrations, domain ownership records (WHOIS), and leaked database dumps.

TCM Academy - Building the Foundation

For those looking to transition from the sidelines to the front lines of cybersecurity, structured learning is key. Platforms like **TCM Academy** offer comprehensive courses designed to equip aspiring professionals with the skills needed to perform these investigations. Their curriculum often covers not just the theoretical underpinnings of OSINT but also practical, hands-on training. Learning to hack effectively means understanding how attackers gather information, and this is where courses focused on reconnaissance come into play. The value of learning these techniques through a reputable academy cannot be overstated. It provides a guided path, ensuring that you learn ethical practices and master the tools of the trade without falling into common pitfalls. For instance, a course on OSINT would likely cover best practices for avoiding detection while collecting intelligence.

The Operator's Toolkit: Essential OSINT Tools

Mastering username and account enumeration is impossible without the right arsenal. While manual methods have their place, automation and specialized tools significantly increase efficiency and effectiveness. Here are some categories of tools and specific examples that are indispensable for any serious OSINT operator:
  • **Search Engines & Specialized Search Operators**: Beyond Google, Yandex, DuckDuckGo, and Bing offer different indexing capabilities. Advanced search operators (e.g., `site:`, `inurl:`, `intitle:`, `filetype:`) are your primary weapons.
  • **Username Checkers**: Tools designed to check username availability across a vast number of websites.
  • **Sherlock**: A popular Python tool that allows you to search for usernames on over 300 social networks. Its effectiveness lies in its broad coverage and ease of use.
        git clone https://github.com/sherlock-project/sherlock.git
        cd sherlock
        python3 -m pip install -r requirements.txt
        python3 sherlock <username>
        ```
  • **WhatsMyName**: A web-based tool that performs similar checks with a user-friendly interface.
  • **Email Address Enumeration Tools**:
  • **Hunter.io / Skymem / Email-db**: These services specialize in finding email addresses associated with specific domains. While often used for marketing purposes, they are invaluable for enumerating professional contacts within an organization.
  • **Recon-ng**: A powerful, modular reconnaissance framework. It can be extended with modules to perform various OSINT tasks, including email discovery and social media linking.
```bash git clone https://github.com/lanmaster53/recon-ng.git cd recon-ng ./recon-ng # Inside recon-ng: # availability = curl https://api.hunter.io/v2/email-exists?domain=example.com&email=test@example.com&api_key=YOUR_API_KEY # For more advanced modules, consult the documentation. ```
  • **Social Media Intelligence (SOCMINT) Tools**:
  • **Maltego**: A sophisticated graphical link analysis tool that uses "transforms" to gather intelligence from various sources, including social media, public records, and DNS data. While it has a learning curve, its power in visualizing relationships is unmatched.
  • **Twint (Twitter Intelligence Tool)**: A great tool for scraping Twitter data without using the Twitter API, allowing for advanced searches and data extraction.
```bash pip install twint # Example: Search for tweets mentioning a username twint -s "username" # Example: Search for users with a specific name twint -u "target_username" --followers ```
  • **Leaked Database Search Engines**: Sites like Dehashed, LeakCheck, and Have I Been Pwned (HIBP) allow you to search for credentials exposed in data breaches. HIBP is particularly useful for checking if an email address has been compromised.
<h2>The Art of the Search: Advanced Techniques</h2> Simply running tools won't make you a master. Effective OSINT requires a strategic mindset and a deep understanding of how online platforms operate. <h3>1. Username Pattern Analysis</h3> Attackers often reuse usernames across multiple platforms. If you discover a username on one site, check common variations:
  • `username123`
  • `username_123`
  • `user_name`
  • `username.official`
  • Adding common suffixes like `dev`, `io`, `hq`, `admin`.
<h3>2. Leveraging Email Addresses</h3> Email addresses are goldmines. If you find an email address (e.g., `john.doe@example.com`), you can often:
  • **Check Google Profiles**: Search for `site:google.com "john.doe@example.com"` or similar queries.
  • **Use services like HIBP**: Check if the associated account has been compromised, which can reveal other usernames and platforms.
  • **Look for related services**: If the email domain reveals a company, investigate that company's employees.
<h3>3. Social Media Deep Dives</h3> Don't just look at profiles; examine their activity:
  • **Follower/Following Lists**: Who are they connected to? This can reveal professional or personal circles.
  • **Tagged Photos and Posts**: Often reveal location, events, and other individuals.
  • **Past Posts**: Older, unarchived posts can contain valuable information.
  • **Bio and Profile Information**: Look for links to other social media, personal websites, or professional portfolios.
<h3>4. The Power of `all-in-one` Tools</h3> Frameworks like **Recon-ng** are designed to automate much of this process. By integrating various modules and APIs, they can perform extensive reconnaissance with minimal manual intervention.
bash # Example of recon-ng usage (simplified) ./recon-ng > keys add > modules load recon/domains-contacts/email_collector > run ``` The **Cyber Mentor** provides excellent resources for learning these tools and techniques, often showcasing practical applications in their YouTube content. These resources are invaluable for understanding the real-world application of OSINT.

Veredicto del Ingeniero: ¿Es Suficiente la Superficie?

Most security professionals and bug bounty hunters recognize the critical need for robust OSINT. However, many still rely on superficial searches or a handful of common tools. This is a dangerous oversight. The adversarial mindset demands that you assume your target has already secured their obvious online presence. Your job is to dig deeper, to find the forgotten accounts, the legacy systems, the misconfigurations that expose them. Username and account enumeration is not a discrete task; it's an ongoing process that underpins every successful offensive operation. If your reconnaissance phase is weak, your entire attack strategy will flounder. You must constantly ask: "What else is exposed?"

Arsenal del Operador/Analista

  • **Software**:
  • Sherlock: For broad username checking.
  • Recon-ng: A powerful, modular reconnaissance framework.
  • Maltego: For visual link analysis and complex data correlation.
  • Twint: For advanced Twitter scraping.
  • Virtual Machine (Kali Linux, Parrot OS): Essential for running security tools in an isolated environment.
  • **Services**:
  • Hunter.io: For domain-based email discovery.
  • Have I Been Pwned (HIBP): For checking compromised credentials.
  • Dehashed / LeakCheck: For searching leaked databases.
  • **Books**:
  • "The Art of Exploitation" by Jon Erickson: Understanding the underlying principles of hacking.
  • "Social Engineering: The Science of Human Hacking" by Christopher Hadnagy: Crucial for understanding how human factors enable account compromise.
  • "Real-World Bug Hunting: A Field Guide to Web Hacking" by Peter Yaworski: Provides practical examples of bug bounty hunting, heavily reliant on OSINT.
  • **Certifications**:
  • OSCP (Offensive Security Certified Professional): While not solely OSINT-focused, it instills the mindset and technical skills necessary for effective reconnaissance.
  • GIAC certifications (e.g., GOSINT): Offer specialized training in open-source intelligence gathering.

Taller Práctico: Enumerating Usernames with Sherlock

Let's walk through a practical exercise using Sherlock. Imagine you have a target username: `john_doe`.
  1. Set up your environment: Ensure you have Python 3 installed on your system. If using Kali Linux or Parrot OS, Python is usually pre-installed.
  2. Clone the Sherlock repository: Open your terminal and navigate to your preferred working directory.
    git clone https://github.com/sherlock-project/sherlock.git
  3. Navigate into the directory:
    cd sherlock
  4. Install dependencies: This command installs all the necessary Python libraries Sherlock requires.
    python3 -m pip install -r requirements.txt
  5. Run Sherlock to search for the username: Replace `john_doe` with the target username you are investigating.
    python3 sherlock john_doe
  6. Analyze the output: Sherlock will output a list of websites where the username `john_doe` is potentially active. Pay close attention to the results. Some will be obvious (social media), while others might be less common platforms or forums.
    
    # Example Output (partial)
    ...
    [*] Checking username: john_doe on 357 websites
    
    [+] john_doe @ 0chan.hk: https://0chan.hk/user/john_doe
    [+] john_doe @ 4chan.org: https://www.4chan.org/user/john_doe
    [+] john_doe @ Ask.fm: https://ask.fm/john_doe
    [+] john_doe @ BitBucket: https://bitbucket.org/john_doe/
    ...
            
  7. Investigate further: For each active profile found, visit the URL and gather more information. Look for profile pictures, biographical details, connections, and any other sensitive data. This is where manual analysis and critical thinking come into play.
This simple exercise demonstrates the power of automated tools in OSINT. However, remember that these tools are only as effective as the operator using them.

Preguntas Frecuentes

What is OSINT?

OSINT, or Open Source Intelligence, is the practice of collecting and analyzing information that is publicly available from open sources, such as the internet, public records, and media.

Why is username enumeration important in cybersecurity?

Username enumeration is crucial because it helps identify a target's online presence, potential attack vectors (like social engineering or credential stuffing), and build a comprehensive profile of an individual or organization.

Are there ethical concerns with OSINT?

Yes, OSINT must be conducted ethically and legally. While the information is public, its collection and use should respect privacy laws and ethical boundaries. It's primarily used for defensive purposes, threat intelligence, and vulnerability assessment.

Can I use these tools on myself?

Yes, using these tools on your own online presence is a great way to understand your digital footprint and identify potential security risks. It's a vital step in personal digital hygiene.

El Contrato: Forging Your Digital Persona Map

You've gathered the tools, you understand the techniques, and you've seen a practical example. Now it's time to put it into action. Your contract is to create a detailed map of a single individual's online persona. Choose a public figure (a celebrity, a tech influencer, a fictional character if a living person feels too sensitive for practice). **Do NOT target private individuals; this is strictly for educational and practice purposes.** Using the tools and techniques discussed, enumerate at least ten distinct online accounts or usernames associated with this individual. For each entry, document: 1. The platform. 2. The username or account identifier. 3. The direct URL to the profile. 4. Any interesting piece of information (e.g., a common theme in their posts, a revealed skill, a connection) you can infer from their profile or activity. Present your findings as a structured report or a graphical representation. This exercise will hone your analytical skills and solidify your understanding of how seemingly disparate pieces of information connect to form a coherent digital identity. The goal is not just to find accounts, but to understand the narrative they tell about the individual.

Sherlock: Unmasking Digital Ghosts in the Social Media Labyrinth

The digital shadows stretch long when you're digging for ghosts. In this concrete jungle of ones and zeros, a username can be the thread that unravels an entire persona. Forget knocking on doors; we're kicking in digital ones. Today, we’re talking about Sherlock. Not the pipe-smoking detective of Baker Street, but a Python script that’s far more ruthless in its pursuit of information. It’s a tool for those who understand that in the realm of cyber intelligence, every piece of data matters, and every username is a potential key. This isn't about petty stalking; it's about the serious business of Open Source Intelligence (OSINT). Whether you're a bug bounty hunter sniffing out targets, a security analyst mapping attack surfaces, or an investigator piecing together a digital footprint, knowing where an individual exists online is paramount. Sherlock is designed to automate this fundamental reconnaissance phase, turning the tedious manual search into a swift, albeit sometimes chilling, automated process.
### The Digital Footprint: A Hunter's Essential Quarry Before we dive into the mechanics of Sherlock, let's frame the battlefield. In the OSINT game, the "digital footprint" is your primary target. This footprint is the trail of data left behind by a user's online activities. It encompasses everything from social media profiles and forum posts to blog comments and account registrations. For an adversary—or a defender understanding an adversary—mapping this footprint is crucial. A consistent username across multiple platforms can link disparate pieces of information, creating a richer, more actionable profile. Think of it as connecting the dots in a vast, interconnected network. The problem is, the digital landscape is a hydra. Create a profile on one site, and there are hundreds of others waiting. Manually checking each platform for a specific username is a grinder, prone to errors and immense time consumption. This is where tools like Sherlock shine. They leverage APIs, site-specific search patterns, and clever web scraping to perform this task at scale.

Table of Contents

### Sherlock: The Tool for Unmasking Sherlock is an open-source Python script designed to search for social media usernames across a vast array of websites. Its strength lies in its comprehensive list of supported sites and its ability to automate the search process. It checks for the existence of a username on numerous platforms, effectively performing a wide-ranging reconnaissance sweep. This can be invaluable for identifying potential targets, understanding an individual's online presence, or even uncovering forgotten accounts.
"The network is a jungle. Some enter it willingly, others are lured in. Your job is to know who's who, and where they hide."
The beauty of Sherlock is its simplicity in execution, yet its power in output. It’s a prime example of how readily available tools can significantly augment an intelligence gathering operation. While it might not perform deep forensic analysis of a compromised system, it excels at the initial phase: finding out *who* you're dealing with and *where* they operate.
### Taming Sherlock: Installation and Configuration Getting Sherlock up and running is a standard affair for anyone familiar with the command line. It’s built on Python, a language that’s become the lingua franca of many security and data analysis tools. Here’s the breakdown: 1. **Cloning the Repository**: First, you need to get the latest code from its source. This is done via `git`.
    git clone https://github.com/sherlock-project/sherlock.git
    ```
    This command downloads the entire Sherlock project into a new directory named `sherlock` in your current working directory.

2.  **Navigating to the Directory**: Once cloned, you need to move into the project’s directory to access its files.
    ```bash
    cd sherlock
    ```

3.  **Installing Dependencies**: Sherlock, like most Python projects, relies on external libraries. These are listed in a `requirements.txt` file. You install them using `pip`, Python's package installer. It's highly recommended to do this within a virtual environment to avoid conflicts with other Python projects on your system.
    ```bash
    python3 -m pip install -r requirements.txt
    ```
    If you're not using a virtual environment, you might need `pip3` depending on your system configuration. This step ensures all necessary components for Sherlock to function are present.

### Syntax and Strategy: Commanding Sherlock

Once installed, running Sherlock involves a straightforward command-line interface. The core functionality is to take one or more usernames and check them against a predefined list of social media sites.

The basic usage is:
bash python3 sherlock.py ... ``` However, Sherlock is packed with options to fine-tune your search. Let's break down the most critical ones:
  • `--help` or `-h`: Displays the full help message, outlining all available commands and options. Essential for any first-time user or when you forget a specific flag.
  • `--version`: Shows the current version of Sherlock and its dependencies. Useful for troubleshooting.
  • `--verbose` or `-v` / `-d`: Enables debug mode. This is your best friend when things go wrong or when you want to see exactly what Sherlock is doing under the hood. It provides verbose output, detailing requests made and responses received.
  • `--rank` or `-r`: Orders the results based on the global popularity rank of the websites from Alexa.com. This is tactically significant; finding a username on a highly popular site often carries more weight than on an obscure one.
  • `--folderoutput FOLDEROUTPUT` or `-fo FOLDEROUTPUT`: If you're checking multiple usernames, this option saves the results into a specified folder. Each username's results will be in a separate file within this folder.
  • `--output OUTPUT` or `-o OUTPUT`: For a single username search, this saves the results to a specified file.
  • `--tor` or `-t`: Routes all requests through the Tor network. This is a critical privacy and anonymity feature, masking your IP address. However, it significantly increases the runtime.
  • `--unique-tor` or `-u`: Similar to `--tor`, but it cycles through Tor circuits for each request. This further enhances anonymity but can drastically slow down the process.
  • `--csv`: Generates the output in CSV format. This is perfect for importing into spreadsheets or databases for further analysis and manipulation.
  • `--site SITE_NAME`: Restricts the search to only specific websites. You can use this flag multiple times to include several specific sites (e.g., `--site twitter.com --site reddit.com`). This is invaluable for targeted investigations.
  • `--proxy PROXY_URL` or `-p PROXY_URL`: Allows you to route requests through a specified proxy. Supports various proxy types (e.g., `socks5://127.0.0.1:1080`).
  • `--json JSON_FILE` or `-j JSON_FILE`: Loads usernames from a JSON file or a remote JSON source. This is useful for batch processing a large list of usernames stored in a structured format.
  • `--proxy_list PROXY_LIST` or `-pl PROXY_LIST`: Uses proxies randomly selected from a list provided in a CSV file.
  • `--check_proxies CHECK_PROXY` or `-cp CHECK_PROXY`: Verifies the proxies from the `--proxy_list`.
  • `--timeout TIMEOUT`: Sets the time (in seconds) Sherlock will wait for a response from a website. A longer timeout can help with slow-loading sites but may also lead to longer overall runtimes if many sites are unresponsive.
### Advanced Tactics: Maximizing Sherlock's Potential The real artistry in using Sherlock isn't just running the basic command. It's about strategic application within a larger intelligence-gathering framework. 1. **Targeted OSINT Campaigns**: If you have a username from a suspicious forum post, use `--site` to check it against high-value targets like LinkedIn, GitHub, or known professional networks. This isn't just finding social fluff; it's about identifying potential professional connections, technical skills, or company affiliations. 2. **Anonymity is Key**: For any sensitive investigation, always default to using `--tor`. The risks of your IP being logged by a platform or an intermediary proxy are too high to ignore. Understand that the trade-off is speed. If speed is critical and anonymity less so, you might run without it, but know the risks. 3. **Data Aggregation and Analysis**: Combine Sherlock’s output with other OSINT tools. If Sherlock finds a username, use another tool to investigate the content of that profile. The `--csv` option is your best friend here, allowing you to pipe the output into a script for further analysis, correlation, or visualization. 4. **Understanding Site Popularity (`--rank`)**: When you encounter a username found on hundreds of sites, focus your deeper manual investigation on the ones flagged by `--rank`. These are typically the most active and informative platforms, offering the richest data.
"Every search tool is a weapon. How you wield it determines if you're a craftsman or a vandal."
### The Engineer's Verdict: Is Sherlock Worth It? Sherlock isn't a silver bullet, but it's an indispensable tool for anyone serious about OSINT. **Pros:**
  • **Automation**: Drastically reduces manual effort in username searching.
  • **Comprehensiveness**: Supports a vast number of websites out-of-the-box.
  • **Flexibility**: Offers numerous options for customization, anonymity, and output format.
  • **Open Source**: Free to use, inspect, and contribute to.
**Cons:**
  • **Speed Limitations**: Especially when using Tor or checking a large number of sites/usernames.
  • **False Positives/Negatives**: Like any automated tool, it can sometimes indicate a username exists when it doesn't, or vice-versa, due to site structure changes or API inconsistencies.
  • **Requires Technical Proficiency**: Basic command-line and Python knowledge are beneficial.
For its intended purpose—automating the initial reconnaissance of usernames across social media—Sherlock is highly effective. It's a foundational piece of the OSINT operator's toolkit. If you're in bug bounty, threat hunting, or digital forensics, you need this in your arsenal. ### Arsenal of the Operator/Analyst
  • **Software**:
  • **Sherlock**: The star of today's show.
  • **Git**: For cloning repositories.
  • **Python 3**: The interpreter for Sherlock.
  • **Tor Browser**: For manual browsing of Tor-hidden sites.
  • **Virtual Machine (e.g., VirtualBox, VMware)**: To isolate investigations and maintain system hygiene. Consider a dedicated OS like Kali Linux or Parrot OS.
  • **Hardware**:
  • A robust machine capable of running VMs and multiple processes.
  • A reliable internet connection.
  • **Books/Certifications**:
  • **"The Hacker Playbook 3: Practical Guide To Penetration Testing"** by Peter Kim.
  • **"Open Source Intelligence (OSINT) Techniques"** by Michael Bazzell.
  • Certifications like **GIAC Certified OSINT Analyst (GOSAI)** or **Certified Threat Intelligence Analyst (CTIA)** can validate your skills.
### Practical Workshop: Leveraging Sherlock for Bug Bounties Let's say you're on a bug bounty program for a large e-commerce platform. You've identified a potential target user's email address from a previous breach or leak. Your next step is to see if this user also interacts with the platform under a different, perhaps less secure, username on related services. **Scenario**: Target email: `johndoe123@example.com`. We suspect they might use `johnny.d` or `jd123` on other platforms. **Steps**: 1. **Identify Related Platforms**: Research the target company. Do they own other domains? Do they have active social media presences where users might link their accounts? 2. **Formulate Usernames**: Based on common variations of `johndoe123` and potential aliases, create a list of usernames. Let's use `johnny.d` and `jd123` for this example. 3. **Run Sherlock with Specific Sites**: Instead of a broad search, focus on platforms relevant to the e-commerce context. ```bash # Assume you are in the sherlock directory python3 sherlock.py --site twitter.com --site reddit.com --site github.com --site instagram.com jdold.doe johnny.d -v ``` This command searches for `jdold.doe` and `johnny.d` on Twitter, Reddit, GitHub, and Instagram, with verbose output enabled. 4. **Analyze Output**:
  • If Sherlock finds `johnny.d` on GitHub, this is a critical lead. It suggests the user might be technically inclined and could have associated personal projects or code snippets.
  • If `jdold.doe` appears on Twitter, examine their tweets for mentions of the e-commerce platform, customer service interactions, or personal information that could be used for social engineering.
5. **Further Investigation**: Use the found usernames to investigate further. Try these usernames on password reset pages or other services. This systematic approach, powered by Sherlock, moves you from a vague suspicion to concrete intelligence about a user's digital identity, which can then be leveraged for vulnerability discovery. ### Frequently Asked Questions
  • **Q: Can Sherlock find someone's real name or full profile?**
A: Sherlock primarily finds the existence of a username on various sites. While this can lead to discovering more personal information through further manual investigation of those found profiles, Sherlock itself does not typically reveal full names or detailed personal data directly.
  • **Q: How often is Sherlock's site list updated?**
A: The list of sites Sherlock checks is maintained by the project's developers. It's a good practice to periodically update your local clone of the repository to get the latest list and any script improvements.
  • **Q: Is using Sherlock legal?**
A: Using Sherlock to gather publicly available information is generally legal, as it automates the process of searching publicly accessible websites. However, the *use* of the information gathered must always comply with relevant laws and ethical guidelines. It is intended for security researchers, bug bounty hunters, and investigators. ### The Contract: Your First OSINT Operation Your mission, should you choose to accept it, involves a username you've encountered in the wild – perhaps from a forum, a data breach leak, or overheard in a digital whisper network. 1. **Select Target Username**: Pick one username from your intel. 2. **Execute Sherlock**: Run Sherlock against this username. Critically, use the `--tor` flag for this operation to maintain operational security. 3. **Analyze & Report**: Document all the platforms where the username was found. For at least two of the most promising platforms (based on relevance or popularity), perform a brief manual investigation. What kind of information can you glean? What's the potential risk or value of this user's digital footprint? 4. **The Question**: If Sherlock found the same username on a platform you didn't explicitly check with `--site`, what does this tell you about their online habits? Report back with your findings. The game is afoot.