Cookie notice
Last updated: 30 Oct 2026
Effective from: not yet in effect (draft)
Draft, pending legal review
1. Cookies we use
We use only cookies that X needs to work. We do not use advertising, analytics or third-party cookies.
| Name | Purpose | How long it lasts |
|---|---|---|
| __Host-sid | Keeps you signed in. Scripts on the page cannot read it. | Until you sign out, and 30 days at most |
| locale | Remembers the language you chose, so the sign-in screens and the app open in it. | 1 year |
| __Host-psid | Keeps our own support staff signed in to the support console. | 8 hours at most |
2. Browser storage
X also saves a few things in your browser: your light or dark theme, whether you closed the notice at the top of the home page, and, for one visit only, the campaign tags (utm_source and similar) in the link you arrived from. The campaign tags are sent to us only if you send a request through our contact form. Nothing else leaves your browser.
3. Your choices
You can block or delete cookies in your browser settings. If you block the sign-in cookie, you cannot sign in to X.
4. Changes
If we ever add other cookies, we will update this notice first, and ask for consent where the law requires it.