# Ancient Methods > I have encrypted an article using a substitution cipher. Can you break it and find the key within the article? ## About the Challenge We were given an encoded message (You can download the file [here](substitution.txt)) ## How to Solve? To solve this chall, im using `Monoalphabetic Substition Decoder` (You can use this [website](https://www.dcode.fr/monoalphabetic-substitution)). ![flag](images/flag.png) ``` TEXSAW{YOUDIDAGREATJOB} ```