how to block Flash in Safari
However, given that exploits of Flash seem to occur sometimes within days of even new releases, it might be wise to think about blocking Flash altogether in your day-to-day browser.
Fortunately, that’s pretty easy to do in Safari. Just go to Safari’s Preferences > Security tab, and uncheck the ‘Allow Plug-ins’ box at the bottom. You can manage which websites are allowed access to Flash from the adjacent button, but an alternative strategy is to use a different browser (Firefox or Opera for example) for only viewing sites where you need Flash access.
Either way, its seems wise to make sure that Flash isn’t allowed unrestricted access on your main browser.