https://blog.wongcw.com/2021/12/15/cisa%e6%95%a6%e4%bf%83%e7%be%8e%e5%9c%8b%e8%81%af%e9%82%a6%e6%a9%9f%e6%a7%8b%e5%9c%a8%e8%80%b6%e8%aa%95%e7%af%80%e5%89%8d%e5%ae%8c%e6%88%90log4shell%e6%bc%8f%e6%b4%9e%e4%bf%ae%e8%a3%9c/