blocked plugin flash

My boss has an iMac and he goes to a site and it says blocked plugin. This is for flash.  It tells him to update.  He does this and installs the new update for flash and the site plays the video fine.  Then the next week it happens again.  And he updates and installs flash and it works again.  This happens about 10 times a month.  What needs to be changed for this to work?  Flash is set to install auto updates so I don't know what is doing this.
mkramer777Asked:
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Brian MatisProduct ManagerCommented:
Any chance you could post a screenshot of what you're seeing?
David AndersTechnician Commented:
This happens because the Mac will intentionally disable the Flash player plugin when it has become outdated, preventing any potential security breaches from occurring.
http://osxdaily.com/2014/05/17/flash-out-of-date-safari-mac-fix/

Chrome will auto update Flash. I am unsure if Safari will do this, even with auto update clicked in Safari preferences.

This is a decent overview of Flash and Safari.
https://discussions.apple.com/docs/DOC-3591

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mkramer777Author Commented:
so the answer is installing it every time this happens or use a different browser?
David AndersTechnician Commented:
Basically yes. Apple is sorta weird about flash and java because of the security problems.
Earlier versions of OSX did not present this problem, Snow Leopard 10.6.8, for example.
Chrome would not present any such problems, that I am aware of. Which may change, of course.
David AndersTechnician Commented:
There is a javascript exploit that has a similar flavor.
How to overcome Safari hijacked by a JavaScript warning
http://www.macissues.com/2015/03/24/how-to-overcome-safari-hijacked-by-a-javascript-warning/
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