An evil twin may be a fraudulent Wi-Fi access point that appears to be legitimate but is about up to pay attention to wireless communications.[1] The evil twin is that the wireless LAN equivalent of the phishing scam.
This type of attack could also be wont to steal the passwords of unsuspecting users, either by monitoring their connections or by phishing, which involves fixing a fraudulent internet site and luring people there.
The attacker snoops on Internet traffic employing a bogus wireless access point. Unwitting web users could also be invited to log into the attacker's server, prompting them to enter sensitive information like usernames and passwords. Often, users are unaware they need been duped until well after the incident has occurred.
When users log into unsecured (non-HTTPS) bank or e-mail accounts, the attacker intercepts the transaction, since it's sent through their equipment. The attacker is additionally ready to hook up with other networks related to the users' credentials.
Fake access points are found out by configuring a wireless card to act as an access point (known as HostAP).
they're hard to trace since they will be shut off instantly. The counterfeit access point could also be given an equivalent SSID and BSSID as a close-by Wi-Fi network. The evil twin are often configured to pass Internet traffic through to the legitimate access point while monitoring the victim's connection, or it can simply say the system is temporarily unavailable after obtaining a username and password.

Comprehensive and Detailed Explanation:
The code shown in the image is indicative of a Cross-Site Scripting (XSS) attack, where malicious JavaScript is injected into a web page via user input. In this case, the attacker includes:
* %3Cscript%20src=...%3E - URL-encoded JavaScript tag to load a malicious script from an external source.
* If the web application echoes this input back without sanitization, the script will execute in the context of the victim's browser.
This allows the attacker to:
* Steal cookies/session tokens
* Perform actions on behalf of the victim
* Redirect the victim to malicious websites
From CEH v13 Courseware:
* Module 10: Web Application Hacking # Cross-Site Scripting (XSS)
Reference:CEH v13 Study Guide - Module 10: Types of XSS (Stored, Reflected, DOM)OWASP Top 10 - A7: Cross-Site Scripting (XSS)

Comprehensive and Detailed Explanation:
Nikto is an open-source web server scanner that:
* Checks for common vulnerabilities
* Detects outdated software versions
* Flags insecure configurations and files
It is widely used for quick and comprehensive web vulnerability assessments.
From CEH v13 Courseware:
* Module 10: Web Application Hacking # Web Vulnerability Scanning Tools Reference:Nikto Project Page - https://cirt.net/Nikto2

Sending an email to a known non-existent user is a reconnaissance technique used to:
* Analyze bounce-back (NDR) messages.
* Discover the email server's operating system, filtering behavior, internal mail routing, and directory structure.
* Reveal technologies such as Exchange, Postfix, etc.
From CEH v13 Official Courseware:
* Module 2: Footprinting and Reconnaissance
CEH v13 Study Guide states:
"Sending a message to an invalid address can reveal error messages or NDRs that leak internal system details, such as mail server versions, spam filtering technologies, and internal naming conventions." Incorrect Options:
* A: Not applicable.
* B/C: Not the purpose here.
* E: Anti-virus testing requires a separate controlled method.
Reference:CEH v13 Study Guide - Module 2: Email Footprinting TechniquesRFC 3463 - Enhanced Mail System Status Codes