A keylogger is a type of software or hardware device that records keystrokes on a computer or mobile device. It can capture every keystroke made by a user, including passwords, messages, and other sensitive information.
Use-cases for keyloggers include:
Monitoring employee activity in the workplace to ensure productivity and prevent misuse of company resources.
Parental control to monitor and protect children's online activities.
Law enforcement agencies may use keyloggers as part of an investigation to gather evidence.
Benefits of keyloggers include:
Detecting unauthorized access or suspicious activities on a computer system.
Recovering lost or forgotten passwords.
Monitoring and improving user experience by analyzing keystrokes and user interactions.
However, it is important to note that keyloggers can also be used for malicious purposes, such as stealing personal information or conducting unauthorized surveillance. The use of keyloggers must comply with legal and ethical standards, and user consent should be obtained when monitoring activities.
Keyloggers can potentially be used for hacking purposes. Malicious actors can use keyloggers to record sensitive information, such as passwords, credit card details, and personal data, without the user's knowledge. This information can then be used for unauthorized access or identity theft.
It is essential to ensure your devices are protected against keyloggers by using up-to-date antivirus software, practicing safe browsing habits, and being cautious of downloading and installing software from untrusted sources. Regularly monitoring your accounts for suspicious activities and using strong, unique passwords can also help protect against potential hacking attempts.
In this list, you can find the best open-source free-to-use Keylogger apps for Windows, Linux, and macOS. Some of them require some technical skills to be used.
1- Sinister
Sinister is Keylogger Generator for Windows/Linux, which sends key-logs & screenshot via email with other juicy target info written in Python 3.
Platforms: Windows 10, Windows 8.1, Windows 7, and Kali Linux.
Features
Works on Windows/Linux
Notify New Victim Via Email
Undetectable
Persistence
Email Credentials Validation before Payload Generation.
Can receive Keylogs in any email provider such as GMAIL, YAHOO, OUTLOOK, Custom SMTP.
SMTP Server/ Port
Sends Screenshot of Victim PC's Screen via email
Creates Executable Binary With Zero Dependencies
Create less size ~ 5mb payload with advance functionality
Obfusticate the Payload before Generating it, hence Bypassing few more antivirus
Generated Payload is Encoded with base64, hence makes extremely difficult to reverse engineer the payload
Function to Kill Antivirus on Victim PC and tries to disable the security
Awesome Colourful Interface to generate payload
On Attacker Side: While Creating Payload, Script Automatically Detects Missing Dependencies & Installs Them
Distinguish Log Data on the Basics of Active Window Name (Check Image for Better Understanding)
Able to add custom Icon to evil file
Built-in Binder which can bind Keylogger to Any File [.pdf, .txt, .exe etc], Running legitimate file on front end & evil codes in back-end as a service.
Checks for Already Running Instance on System, If running instance found, then only legitimate file is executed [Multiple Instance Prohibiter to avoid Receiving Duplicate Email Logs].
Attacker can Create/Compile for Both Windows/Linux OS Using Linux System, But Can only Create/Compile Windows Executable using Windows Machine
Retrieves Saved Passwords from victim System and sends it to Attacker.
logkeys is a Linux keylogger. Although it is not more advanced than other available Linux keyloggers like lkl and uberkey, it is relatively newer and more up to date. One advantage of logkeys is that it doesn't unreliably repeat keys and it shouldn't crash your X. In general, it simply works. logkeys utilizes the event interface of the Linux input subsystem. Once fully configured, it logs all common character and function keys while also recognizing the Shift and AltGr key modifiers.
This linux-keylogger is an open-source simple C++ keylogger prototype, which is meant to showcase the basics of Linux keylogging.
Replace /dev/input/event4 (main.cpp) with your keyboard event, $cat /proc/bus/input/devices should give you an idea about it
The keylogger needs root privileges to be run. You can use the build.sh script to try it out, or compile it with the command g++ main.cpp -o main && sudo ./main
Keylogger is a 100% invisible keylogger, not only for users. It monitors all keystrokes and mouse clicks. Additionally, it has a separate process that continuously captures system screenshots and sends them to an FTP server at specified intervals.
It is designed in visual C++ and it is run in the background in stealth mode (Hidden Window).
This Keylogger is a stealthy tool that monitors keystrokes, mouse clicks, and captures system screenshots. It is designed to be undetectable and tamper-proof. It logs all keystrokes, provides a reader-friendly version, and offers continuous screenshots. The captured data is sent to an FTP server and the tool can automatically start on system bootup and copy itself to a specific folder.
PyLoggy is a simple and powerful Python keylogger that can log keystrokes, mouse clicks, take screenshots, and more! The tool can send the logs to your email every minute (this interval can be changed).
KeyloggerScreenshot is a tool that enables attackers to capture all the information typed by the target, take screenshots at specific intervals, and store all the audio recorded from the target's microphone on your server. Every mouse click made by the target will also be logged on the server. Follow the instructions in the "KeyloggerScreenshot" guide to set up your own server.
This is a simple yet powerful app that allows you to get Keyboard, Mouse, ScreenShot, Microphone Inputs and Send to your Mail. The purpose of the project is testing the security of information systems.
Unknown Logger is an advanced Windows Keylogger with features like (Disable CMD, Screenshotter, Client Stub Builder, Low Level Keyhooks, Hide Application, Respawner, Delete Chrome and Firefox data, and more!).
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