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With my web application I’ve noticed that on the “New Tab” page it shows a series of my recently view websites with screenshots.
The problem here is that some of these screen shots show sensitive information from my web page.
Is there a way to block Firefox from taking screen shots of my web application in particular without requiring browser configurations (in my website code)?
I believe chrome has a similar feature, I would like to block it as well.
Perhaps you could set the cache-control header. This would tell the browser to make all possible efforts not to save the page on the user’s computer.
http://en.wikipedia.org/wiki/List_of_HTTP_header_fields#Avoiding_caching
Sadly, this would be a performance hit since the user would need to pull down each page entirely for every call they make.