Which spyware type captures web form data submitted via browsers?

Which spyware type captures web form data submitted via browsers?

• A. Memory-Injection-Based Keylogger
• B. Form-Grabbing-Based Keylogger
• C. JavaScript-Based Keylogger
• D. Hypervisor-Based Keylogger

Answer: (B)

Form-grabbing-based keyloggers are designed to harvest the exact data users submit into web forms by pulling the values from the browser’s memory or the form submission stream at the moment the form is posted. This means usernames, passwords, credit card numbers, and other sensitive fields can be captured as the data leaves the browser, often before it’s encrypted or transmitted to the server. That targeted access to form data during submission is what makes this technique especially effective for stealing credentials and payment details. Other spyware methods operate differently: memory-injection-based keyloggers focus on recording keystrokes as they’re typed, which may miss form data entered via clipboard or autofill; JavaScript-based keyloggers run code in a compromised web page to capture input, which is limited to that page and can be blocked by protections; and hypervisor-based keyloggers monitor input at a lower, hardware/virtualization level and aren’t specifically about web form data, though they can capture keystrokes in general.

Form-grabbing-based keyloggers are designed to harvest the exact data users submit into web forms by pulling the values from the browser’s memory or the form submission stream at the moment the form is posted. This means usernames, passwords, credit card numbers, and other sensitive fields can be captured as the data leaves the browser, often before it’s encrypted or transmitted to the server. That targeted access to form data during submission is what makes this technique especially effective for stealing credentials and payment details.

Other spyware methods operate differently: memory-injection-based keyloggers focus on recording keystrokes as they’re typed, which may miss form data entered via clipboard or autofill; JavaScript-based keyloggers run code in a compromised web page to capture input, which is limited to that page and can be blocked by protections; and hypervisor-based keyloggers monitor input at a lower, hardware/virtualization level and aren’t specifically about web form data, though they can capture keystrokes in general.