https://blog.gongquiz.com/2023/01/03/%ea%b2%b0%ed%95%a8%ec%9c%84%ed%97%98%eb%b6%84%ec%84%9dfha-fault-hazard-analysis%ec%9d%98-%ec%a0%81%ec%9a%a9-%eb%8b%a8%ea%b3%84%eb%a1%9c-%ea%b0%80%ec%9e%a5-%ec%a0%81%ec%a0%88%ed%95%9c-%ea%b1%b4/