Browser based Port Scanning with JavaScript

Posted on January 10, 2021 in Security • Tagged with browser, port scanning, JavaScript • 13 min read

In this article, various techniques to conduct port scanning from within the browser are developed. Modern JavaScript is used.


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Abusing image tags for cross domain requests

Posted on December 15, 2020 in Security • Tagged with cross-domain-requests, cors, browser • 3 min read

Cross domain requests with <img> tags are not bound to the same origin policy. I will shed light on several possibilities how malicious web site owners can potentially abuse cross domain request done with <img> and script tags created with JavaScript.


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