Safari is attempting to autofill the password on my bank’s website using my info from iBank. How can I stop this?

Occasionally Safari may attempt to autofill your password information when visiting the website for your bank. The first time Safari does this, it will ask for your permission to access the keychain item. Choosing “Deny” at this step will stop it from using it. However, if you’ve responded with “Allow” in the past, the following describes how…