CORS

teacher and chalkboard

The Death and Rebirth of Musashi.js OR How I turned personal failure into better teaching tools.

A little background… As I stood in front of a class of developers trying to explain cross-origin resource sharing (CORS), I knew I wasn’t conveying it well enough for a significant subset of the group. It was Autumn 2017 (not my password at the time, by the way), and I was on-site with one of …

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CarolinaCon 11 Slides for Anatomy of Web Client Attack

For those who have asked – my slide deck for Anatomy of Web Client Attacks can be downloaded here. Jason Gillam is a Senior Security Consultant with Secure Ideas. If you are in need of a penetration test or other security consulting services you can contact him at jgillam@secureideas.com, on Twitter @JGillam, or visit the …

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CORS Global Policy

I recently noticed an uptake on Cross-Origin Resource Sharing (CORS) findings showing up in automated scanning tools, which would not have been a significant concern except for the fact that the tools were rating this as a relatively “high” severity and very few people I asked about it seemed to have any idea what it …

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Grab a CORS Light

Many of you already know that any cross-site HTTP requests invoked from scripts running within a browser are restricted by the Same-Origin-Policy.  Basically this means that any cross-site HTTP requests, such as XMLHttpRequest, are only allowed to make requests to the same domain that the page was loaded from, and not to any other domains.  …

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