Google Chrome - yes, it has Flash built-in. Firefox - "no", it doesn't have Flash built-in but uses Flash installed in the operating system. However, Flash ins

Google Chrome - yes, it has Flash built-in. Firefox - "no", it doesn't have Flash built-in but uses Flash installed in the operating system. However, Flash installed separately for example in Windows/OS X also updates itself. However, you are screwed either way: always running the latest Flash player version which is known to be constantly full of security bugs, just like in the past 3 years... :)