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-## Requirements
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+# Capture The Flag (CTF) Exercise
+
+Welcome to the Capture The Flag (CTF) exercise! In this challenge, you will be tasked with exploiting a cloud-hosted website to uncover a secret key. Please read the instructions carefully and follow the guidelines below.
+
+## Challenge Overview
+
+Your mission is to interact and try to exploit a cloud-hosted website to uncover a secret key hidden in a file within the website’s file system.
+
+You are provided with the following resources:
+
+- A cloud-hosted website: [https://hello-anya.fly.dev](https://hello-anya.fly.dev)
+- The name of the text file that holds the secret key: **"secret_file"**
+- The source code of the above website (the actual "secret_file" is not included)
+- The first three letters of the secret: **"19b"**
+
+## Requirements
+
+- Go through the provided source code to understand how the website works and find any potential vulnerabilities.
+- Interact with the website while combining with the knowledge of the source code to uncover the hidden secret key
+- After successfully finding the secret key, you are required to submit your findings via email. Your submission should include:
+   - The answer: the complete value of the secret key.
+   - A short explanation of how you discovered the secret key.
+
+## Hint
+
+- Pay special attention to the `pages_controller.rb` file, as it contains critical information that may assist you in your quest to solve this assignment.