https://blog.faceutil.com/2017/04/05/%ea%b0%a4%eb%9f%ad%ec%8b%9c-%eb%85%b8%ed%8a%b8-2-%ed%94%8c%eb%9e%98%ec%8b%9c-%ec%95%88%eb%90%a0%eb%95%8c-%ed%95%b4%ea%b2%b0%eb%b2%95-adobe-flash-player-11-%eb%8b%a4%ec%9a%b4%eb%b0%9b%ea%b8%b0/