Browser Console Warning

README.md

Browser Console Warning

There is so many user that don't know what is browser console. An attacker can steal an information from their account by injecting a malicious javascript. By using this script, developer can easily give a warning for user on the browser console.

browserConsoleWarning.js

(function() {
    var warning = "🚫STOP!";
    var message = "This is a browser feature intended for developers. Do not enter or paste code which you don't understand. It may allow attackers to steal your information or impersonate you.\nSee https://en.wikipedia.org/wiki/Self-XSS for more details";
    if (navigator && navigator.userAgent) {
        var t = navigator.userAgent.match(/opera|chrome|safari|firefox|msie|trident(?=\/)/i);
        if (t && t[0].search(/trident|msie/i) < 0) {
            window.console.log("%c" + warning, "color:red;font-size:xx-large;font-weight:bold;");
            window.console.log("%c" + message, "font-size:large;");
            return;
        }
    }
    window.console.log(warning + "\n" + message)
})()

browserConsoleWarning.min.js

(function(){var e="This is a browser feature intended for developers. Do not enter or paste code which you don't understand. It may allow attackers to steal your information or impersonate you.\nSee https://en.wikipedia.org/wiki/Self-XSS for more details";if(navigator&&navigator.userAgent){var o=navigator.userAgent.match(/opera|chrome|safari|firefox|msie|trident(?=\/)/i);if(o&&o[0].search(/trident|msie/i)<0)return window.console.log("%c🚫STOP!","color:red;font-size:xx-large;font-weight:bold;"),void window.console.log("%c"+e,"font-size:large;")}window.console.log("🚫STOP!\n"+e)})();