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312-50V12 · Question #98

312-50V12 Question #98: Real Exam Question with Answer & Explanation

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Submitted by andres_qro· Mar 4, 2026Web Application Hacking

Question

Calvin, a grey-hat hacker, targets a web application that has design flaws in its authentication mechanism. He enumerates usernames from the login form of the web application, which requests users to feed data and specifies the incorrect field in case of invalid credentials. Later, Calvin uses this information to perform social engineering. Which of the following design flaws in the authentication mechanism is exploited by Calvin?

Options

  • AInsecure transmission of credentials
  • BVerbose failure messages
  • CUser impersonation
  • DPassword reset mechanism

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Topics

#Web application hacking#Authentication flaws#Verbose error messages#Username enumeration
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