External Reconnaissance – As technology continues to evolve, so do cyber threats, making cybersecurity an essential aspect of any modern organization.

Ethical hacking, or hacking with a lawful and legitimate purpose, has become an integral part of ensuring the safety and security of an organization’s information systems.

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The first phase in ethical hacking is external reconnaissance.

It is the initial step in assessing an organization’s external-facing assets, determining vulnerabilities, and analyzing potential attack vectors.

External reconnaissance is critical to finding information about an organization that an attacker could use to identify vulnerabilities and breach their systems.

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The goal of external reconnaissance is to gather as much information as possible about the target organization without alerting its security systems.

This phase determines the scope of the penetration testing, identifies potential targets, and provides insight into the organization’s network architecture.

External Reconnaissance

External reconnaissance involves a combination of manual and automated techniques to gather the information needed to launch an attack.

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Automated techniques involve downloading information from search engines, web scanners, and domain name servers. These techniques are fast and accurate in gathering information, but they can lead to false positives and miss essential details.

Manual techniques include social engineering, email reconnaissance, and even physical reconnaissance.

Manual techniques are slower and require more effort, but they are less likely to generate false positives and more likely to provide more accurate information.

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An ethical hacker typically follows the following methodology during the external reconnaissance phase:

Identify the scope of the test

Determine what assets will be tested, and what information needs to be gathered.

Obtain information from the target organization

Use different tools to find out as much information as possible about the target organization. This process typically involves searching for the organization’s email address, web servers, DNS systems, and public IP blocks.

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Analyze the information collected

Scrutinize the information collected from open sources to determine how an attacker could use it to their advantage.

Identify potential vulnerabilities

Use the information collected to identify any potential vulnerabilities in the target organization’s infrastructure and systems.

Prepare a report

Document the findings and create a report that can be used to fix the vulnerabilities identified.

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In conclusion, external reconnaissance is an essential aspect of ethical hacking. Without a comprehensive understanding of the target organization’s external-facing assets, an ethical hacker’s ability to identify vulnerabilities and potential attack vectors is severely limited.

The information that an ethical hacker collects during this phase sets the groundwork for the whole penetration testing process, ensuring that the subsequent phases are effective in producing a secure organizational network.

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