Regarding security concerns, are browser-providers excusable for allowing cross-site cookies ? Does any important use of it do justify the existance of this dangerous mechanism?
See this reference
Regarding security concerns, are browser-providers excusable for allowing cross-site cookies ? Does any important use of it do justify the existance of this dangerous mechanism?
See this reference
No.
Webmasters can ask (modern) browser to only sent cookies when first-party with the SameSite attribute:
Set-Cookie: key=value; HttpOnly; SameSite=strict
https://www.sjoerdlangkemper.nl/2016/04/14/preventing-csrf-with-samesite-cookie-attribute/
Beware, it's possible that when arriving on the website from another, cookies will not be sent.