### **A simple CLI script to see if your password has been exposed in a data breach.** ## Video: Installation & Usage Guide:.

Your password for your social or banking app, which you assume is the most secure in the world, could have been compromised and listed in a data breach. According to Avast, billions of login credentials are compromised every year as a result of hacker attacks. Because data leak records contain millions of stolen usernames and passwords, trying to search these records line by line to find a match for your password is extremely difficult and impractical. https://steemitimages.com/500x600/https://cdn.steemitimages.com/DQmXQXwYddHCZcVhyoDMXN5uuT1BRmCJrTcia4vdvNArSLp/Screenshot%20from%202022-09-27%2014-41-24.png **Troy Hunt** created a service called ["Have I Been Pwned"](https://haveibeenpwned.com) that allows users to see if their passwords have been stolen and are listed in any data leak records online. In this article, we'll use Python to build a command line tool that uses the "Have I Been Pwned API" to determine if you have a password that has been compromised in a data breach. ## Pwned - Check Your Passwords **Pwned** is a simple and opensource command-line Python script that verifies if you have a password that has been compromised in a data breach. This script uses the [haveibeenpwned](https://haveibeenpwned.com/API/v3) API to determine whether your passwords were compromised during one of the many breaches of online services. This API employs the [k-Anonymity model](https://en.wikipedia.org/wiki/K-anonymity), which allows a password to be searched for by partial hash in order to anonymously verify if a password was leaked without disclosing the searched password. https://steemitimages.com/500x600/https://cdn.steemitimages.com/DQmbDGb1F4KDU2Ss83bGkbhgJzvGrfXoBb5bpe4skZqn3uc/Screenshot%20from%202022-09-27%2016-08-29.png ## How pwned script works https://steemitimages.com/500x600/https://cdn.steemitimages.com/DQmS7HydmnZ2pejPPSCFPBbNg3nihL9CDz1Y3Azu1XjxyRE/78675721-1573e100-7903-11ea-8f9d-4e411b897e6f.png ## Git Installation ``` # clone the repo $ git clone https://github.com/sameera-madushan/Pwned.git # change your directory to Pwned $ cd Pwned # install the requirements $ pip3 install -r requirements.txt ``` ## How to use Pwned after installation: ``` python pwned.py -p your-password-here ``` ## Summary: This python program [Pwned](https://github.com/sameera-madushan/Pwned) can work on both Windows, Linux Os e.tc. ###### Note: You need to have Python installed on your operating systems before installing *Pwned*. #### Installing Latest Python on Windows Use this link to [Download](https://python.org) Python for Windows Os. #### Installing Latest Python on Linux or Terminal Open *terminal* with *CTL+ALT+T* or Search for Terminal on your computer Type this commands to install Python. ``` $ python --version ``` // If the revision level is lower than 3.7.x, or if Python is not installed, continue to the next step. // ##### Step 1: Update and Refresh Repository Lists Open a terminal window, and enter the following: ``` $ sudo apt update ``` #### Step 2: Install Supporting Software ``` $ sudo apt install software-properties-common ``` ##### Step 3: Install Python 3 ``` $ sudo apt install python3.8 ``` *Allow the process to complete and verify the Python version was installed sucessfully::* ``` python --version ``` ###### Thank you for spending the time to read this article. Your feedback is greatly appreciated. If you have any problems installing the program or require additional assistance, please leave a comment on this article. ##### *Peace Out!*