Legal
Privacy policy
Plain language, no legalese we wouldn't say out loud. Last updated October 2026.
What we collect
When you use Signal9 we collect the account details you give us (name, email), your lab and challenge progress, and the server logs needed to run the service and fix faults. We use signup, lab launch, terminal readiness and completed challenge timestamps to understand whether learners reach a working lab, solve it and return. Operators see these learning outcomes as aggregate counts. This measurement does not record terminal commands, answers or browsing history, and is not sent to a third-party analytics service.
Emails we send
We email you about your account when you need it: sign-in links, password resets and certificates. Reminder emails (a streak about to break, or a cert-prep track you started that has gone quiet) are off unless you turn them on in Settings, go out at most once a day, and every one has a one-click unsubscribe link.
Where your lab progress lives
Your XP, streak and lab results are stored in your Signal9 account on our servers, so they follow you across devices. Display preferences (like sidebar and density settings) are stored in your browser's localStorage and stay on that device.
Cookies and analytics
We use your browser's local storage to remember your preferences and keep you signed in. If you choose "Accept diagnostics" in the cookie notice, the web app sends anonymous crash reports to Sentry so we can fix faults. We don't run third-party analytics or cross-site advertising trackers.
We do not sell your data
Signal9 does not sell, rent or trade your personal data or lab activity to third parties. Data is used only to run, secure and improve the product.
Service providers
We rely on a small number of infrastructure providers to host the app, run lab environments and process payments. These providers only receive the data needed to perform their function and are bound by confidentiality obligations. The current list is published on our subprocessors page, alongside our security practices.
Your choices
You can export or delete your account data at any time from account settings, or by emailing us. Clearing your browser's site data removes locally stored progress on that device but not progress already synced to your account.
Questions
Reach out to support@signal9.sh with any privacy questions or requests.