Anubis has no developer-operated server. It reads search results and the current tab's address in your browser to apply your choices; it does not send that browsing data to the developer or use it for advertising.

What's stored, and where
- Your list, settings, tag choices, and subscriptions are kept in your browser's sync storage. If you're signed in to your browser with sync on, the browser copies them to your other computers. Anubis never sees them.
- A sync server's address and login, if you connect one, are saved in that browser only. If you enable end-to-end encryption, its passphrase is also saved in that browser only.
- Downloaded lists are kept only on this computer.

What Anubis connects to (only these)
- The lists you subscribe to, wherever they're hosted, to check for new versions (at most once a day). On install it subscribes you to four lists of its own, hosted on GitHub; you can turn them off in Settings → Lists.
- The directory of lists on GitHub, when you open Settings → Lists.
- The search engine you're on, for "Load more results", which loads its next page like the "Next" link would. If the engine sends a page without results, Anubis opens that page once more out of sight, the same as opening it yourself.
- The WebDAV server you connect for syncing between browsers, if you do. Anubis sends your ranked sites, settings, tag choices, and subscriptions to that address and nowhere else. End-to-end encryption is on by default for new connections; without it, the server operator can read the file.
- Issue trackers, only when you choose "Report a problem", "Report it to…", or "Suggest it to…". These open a pre-filled issue in a new tab (Anubis's version, your browser, the search engine, or a result's address without anything after "?"); nothing is sent unless you submit it yourself.

Downloading a list works like any other download: the host sees your IP address and which file was asked for. Anubis sends no cookies, no identifier, and nothing about your searches.

Firefox data collection: Anubis declares no required data collection. It asks for optional browsing-activity consent only when you connect a sync server, and Disconnect takes it back.

Full policy and history: https://bishop-v.github.io/anubis/guide/privacy
Questions: https://github.com/Bishop-V/anubis/issues