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JavaScript AJAX Basics AJAX Concepts AJAX Security Limitations

Tomasz Grodzki
Tomasz Grodzki
8,130 Points

Why we need same-origin policy?

On mdn we can read that same-origin policy helps to: "isolate potentially malicious documents, reducing possible attack vectors".

Okay, I understand. But Dave said that there are a few ways to 'circumvent' same-origin policy. So how does it ensure security since we can 'circumvent' it such easy?

1 Answer

David Tran
PLUS
David Tran
Courses Plus Student 12,429 Points

If my understanding is correct, you cannot inject scripts or modify the DOM (using your web browser) on other domains.