DeauthDetector
→ View on GitHubAI Summary: DeauthDetector is an open-source tool designed to monitor and detect Wi-Fi deauthentication attacks using an ESP8266 microcontroller. Its primary use case involves real-time identification of malicious deauth frames, indicated by an LED activation, making it an effective low-cost solution for network security monitoring. Notable features include customizable scanning options, support for multiple channels, and easy installation via precompiled binaries or Arduino integration.
README
DeauthDetector
Detect deauthentication frames using an ESP8266

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Maltronics is selling a Deauth Detector based on this project:
🛒 https://maltronics.com/products/deauth-detector
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How it works
If the ESP8266 detects deauthentication or disassociation frames it will turn on its LED. That’s all ¯\ (ツ)/¯.

So this is a good and cheap way to detect a Wi-Fi deauthentication attack.
How to install it
You will only need to follow one of the installation methods!
Uploading the .bin file
Upload the deauth_detector.bin using the nodemcu-flasher or the esptool from Espressif.
Using Arduino
1 Install Arduino
2 Install the ESP8266 SDK
3 Download this project and open it with Arduino
4 Maybe customize the code:
#define channel 1 //the channel it should scan on (1-14)
#define channelHopping true //scan on all channels
#define maxChannel 13 //US = 11, EU = 13, Japan = 14
#define ledPin 2 //led pin ( 2 = built-in LED)
#define inverted true // invert HIGH/LOW for the LED
#define packetRate 3 //min. packets before it gets recognized as an attack
#define scanTime 500 //scan time per channel in ms
5 Upload the code to your ESP8266 (don’t forget to set it to the right upload settings!)
Done