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When I log in to my Capital One credit card and type in the letter "k", Firefox automatically puts in my user name and password. How do I prevent this?

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When I log in to my Capital One credit card and type in the letter "k", Firefox automatically puts in my user name and password. How do I prevent this? For security reasons, I want to manually type in my user name and password. Please help!

When I log in to my Capital One credit card and type in the letter "k", Firefox automatically puts in my user name and password. How do I prevent this? For security reasons, I want to manually type in my user name and password. Please help!

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  • Click the (empty) input field on the web page to open the drop down list
  • Highlight an entry in the drop down list
  • Press the Delete key (on Mac: Shift+Delete) to remove it.
  • Tools > Options > Security: Passwords: "Saved Passwords" > "Show Passwords"

You can set the pref signon.autofillForms to false on the about:config page.


To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website.
If you see a warning then you can confirm that you want to access that page.

  • Use the Filter bar at to top of the about:config page to locate a preference more easily.
  • Preferences that have been modified show as bold(user set).
  • Preferences can be reset to the default or changed via the right-click context menu.