Why does Cross-Origin-Opener-Policy prevent opening links to the same-origin/domain when target="_blank" is used?

Let’s say you serve a website with the header Cross-Origin-Opener-Policy: same-origin. This is a new header that, if I understood it correctly, completely separates a browsing tab/origin to prevent against such low-level attacks like CPU-m… Continue reading Why does Cross-Origin-Opener-Policy prevent opening links to the same-origin/domain when target="_blank" is used?

COOP and COEP: Is there an advantage to enabling COOP / COEP if I don’t need to use the sharedArrayBuffer or other features?

COOP: cross origin opener policy
COEP: Cross origin embedder policy
Most of the articles on the web, related to COOP / COEP, point to the fact that by enabling COOP / COEP , your web page can use the sharedArrayBuffer and some other precis… Continue reading COOP and COEP: Is there an advantage to enabling COOP / COEP if I don’t need to use the sharedArrayBuffer or other features?

I have CSRF protection implemented server side, can I safely use `SameSite=None; Secure; HttpOnly`?

We have a web service where GET is always safe and all unsafe POST requests use single-use CSRF tokens. We have some cases where cross-origin domain would need to pass us POST request with data that should be used with currently active use… Continue reading I have CSRF protection implemented server side, can I safely use `SameSite=None; Secure; HttpOnly`?