Update README.md

Author: ZacariahCyberSec

README.md

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-# Cybersecurity-python-algorithms
-Python-based algorithm to automate file updates for access control.
+# 🛡️ Update a File through a Python Algorithm
+
+This project is part of the Coursera **Cybersecurity Professional Certificate (Course 7)**. It demonstrates my ability to write Python code that reads, processes, and updates file data — a critical skill in cybersecurity automation.
+
+## 📄 Project Description
+
+In a healthcare company, access to restricted content is controlled via a file that stores an allow list of IP addresses. Some IPs must be removed from this list regularly based on a `remove_list`. I developed a Python script to automate this process.
+
+The algorithm:
+- Opens the `allow_list.txt` file
+- Reads and parses the content
+- Removes IP addresses found in `remove_list`
+- Updates the file with the new list using `.write()`
+
+## 🧠 Skills Demonstrated
+- File handling with `open()`, `.read()`, and `.write()`
+- String manipulation with `.split()` and `.join()`
+- Looping with `for` and conditional logic with `if`
+- Use of `.remove()` method to delete data from a list
+- Writing clear, documented Python code
+
+## 📁 Files Included
+- `file_update_script.py` – Python script that performs the file update
+- `Update_File_Algorithm_Portfolio_Report.docx` – Portfolio write-up with code explanations and context
+
+## ✅ Status
+Completed and submitted on Coursera with a score of **100%**.
+
+## 🔗 Author
+**Tinashe Zacariah**  
+[LinkedIn Profile](https://www.linkedin.com/in/tinashezacariah/)  
+[GitHub Profile](https://github.com/Zackeunor89)