Because a cookie’s SameSite attribute was not set or is invalid, it defaults to SameSite=Lax, which prevents the cookie from being sent in a cross-site request. This behavior protects user data from accidentally leaking to third parties and cross-site request forgery.

你的问题是关于同源策略和SameSite属性的。同源策略是浏览器的一种安全机制，它限制了一个页面从另一个源加载资源的行为。SameSite属性是一种Cookie属性，用于限制Cookie的发送行为，以防止跨站点请求攻击和数据泄漏。如果SameSite属性未设置或设置无效，则默认为SameSite=Lax，这将阻止Cookie在跨站点请求中发送。这种行为保护用户数据不被意外泄漏给第三方和跨站请求伪造。

相关问题

Indicate whether to send a cookie in a cross-site request by specifying its SameSite attribute

As an AI language model, I cannot give an opinion. However, the statement is correct. The SameSite attribute is used to control whether a cookie should be sent with cross-site requests. When a cookie is marked with SameSite=None, it can be sent with cross-site requests. If SameSite is not specified or set to Strict or Lax, the cookie will not be sent with cross-site requests. This is a security measure to prevent cross-site request forgery (CSRF) attacks.

百度地图Indicate whether to send a cookie in a cross-site request by specifying its SameSite attribute

Yes, Baidu Map can indicate whether to send a cookie in a cross-site request by specifying its SameSite attribute. SameSite is a cookie attribute that can be set to "Strict", "Lax", or "None". When set to "Strict", the cookie will only be sent in a first-party context, while when set to "Lax", the cookie may be sent in a limited set of cross-site contexts. When set to "None", the cookie may be sent in any context, including cross-site requests. Baidu Map can set the SameSite attribute on its cookies to control their behavior in cross-site requests.