Is there a danger of my clipboard data being harvested by a webapp or site that I visit?I would like to stay safe, but I want to keep Javascript enabled to give a better user experience.
The dangers of webapps or websites maliciously accessing my clipboard?
security
Most modern browsers will not allow JavaScript to access your clipboard without at least a warning. It's plugins such as Flash that you need to worry about.For more information, see MozillaZine's article which states:By default, JavaScript is not allowed  to read or set your clipboard data for  security and privacy reasons. This is  because websites scripts can erase and  replace what you currently have in  your clipboard (data loss issue) and  they can read whatever you have in  your clipboard (security and privacy  issue); as such, you should grant  access with caution.There are extensions such as AllowClipboard Helper for Firefox which should let you decide exactly which sites have access to your clipboard.