I haven't been following the issue at all, so I'm approaching this with very little info.
First question: Is there a problem, or a danger, using Adobe Flash Player? I would like to use an on-line electronic circuit design program that requires Flash Player to be installed in my Opera browser, and I've downloaded Flash Player ver 18.104.22.168...............but did I make a mistake by doing that? I also installed the same version on Firefox.
Second question: What is the danger, if any?
Third question: Should I remove, or disable, Flash Player?