https://blog.gongquiz.com/2023/01/05/%ea%b8%b0%eb%a5%b4%ed%83%80%ec%8a%a4-time-attack-%ed%99%9c%ec%9a%94%ec%a0%95-%ec%a0%95%eb%a7%90-%ec%82%ac%ea%b8%b0%ec%9e%85%eb%8b%88%eb%8b%a4-%eb%a6%ac%eb%8b%88%ec%a7%80-ltbp-1-7h_%ed%99%9c/