Which one of the following is a threat related to the use of web-based client side input validation?

Question

Options

• AUsers would be able to alter the input after validation has occurred
• BThe web server would not be able to validate the input after transmission
• CThe client system could receive invalid input from the web server
• DThe web server would not be able to receive invalid input from the client

• A
  84% (16)
• C
  5% (1)
• D
  11% (2)

Explanation

A threat related to the use of web-based client side input validation is that users would be able to alter the input after validation has occurred. Client side input validation is performed on the user's browser using JavaScript or other scripting languages. It can provide a faster and more user- friendly feedback to the user, but it can also be easily bypassed or manipulated by an attacker who disables JavaScript, uses a web proxy, or modifies the source code of the web page. Therefore, client side input validation should not be relied upon as the sole or primary method of preventing malicious or malformed input from reaching the web server. Server side input validation is also necessary to ensure the security and integrity of the web application.

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