A session cookie, so you stay signed in. A short-lived confirmation cookie when you prove your identity for a sensitive action. An anonymous id used to deduplicate impressions on our own pages.
No advertising cookies and no third-party tracking pixels. Promoted placements are chosen by rotation on our servers, not by profiling you across the web.
The session and security cookies are strictly necessary: without them you cannot sign in safely. The anonymous measurement id can be cleared at any time by clearing site data.