Cookie Policy

Effective: May 18, 2026·Last updated: May 18, 2026·privacy@joinlattice.app

1. What Are Cookies

Cookies are small text files placed on your device by a website when you visit it. They allow the website to remember your preferences or keep you logged in between page loads. Cookies are widely used across the internet and are a standard part of how web applications function.

Lattice uses a minimal set of cookies — only those strictly necessary for the platform to operate correctly. We do not use advertising cookies, tracking pixels, or behavioral analytics cookies.

2. Cookies We Use

Cookie name	Purpose	Type
next-auth.session-token	Authentication — keeps you logged in. HttpOnly, Secure, SameSite=Lax.	Session / Persistent
next-auth.csrf-token	CSRF protection — prevents cross-site request forgery on form submissions.	Session
next-auth.callback-url	Remembers where to redirect you after login.	Session

LocalStorage (not cookies)

In addition to cookies, Lattice uses your browser's localStorage to store your light/dark mode preference. This data stays entirely on your device and is never transmitted to our servers. It contains no personal information.

3. Duration

Session cookies (next-auth.csrf-token, callback-url) — deleted when you close your browser.
Authentication cookie (next-auth.session-token) — persists for 7 days, then expires. Signing out deletes it immediately.
LocalStorage — persists until you clear your browser's local storage or explicitly change your theme preference.

4. Third-Party Cookies

Lattice does not use third-party advertising cookies, social media tracking pixels, or cross-site analytics cookies.

Our payment processor Stripe may set cookies when you visit our billing pages. These are governed by Stripe's Privacy Policy and are used to detect fraud and secure your payment session.

5. Managing Cookies

You can control and delete cookies through your browser settings:

Chrome — Settings > Privacy and Security > Cookies and other site data
Firefox — Settings > Privacy & Security > Cookies and Site Data
Safari — Preferences > Privacy > Manage Website Data
Edge — Settings > Cookies and Site Permissions

Note: Deleting the Lattice session cookie will sign you out. Because we only use essential cookies, there is no way to use Lattice while blocking all cookies — the authentication cookie is required for the platform to function.

6. Contact

Questions about our cookie practices? privacy@joinlattice.app