What the s_ecid cookie does
This cookie is set by the customer's domain after the AMCV cookie is set by the client. The purpose of this cookie is to allow persistent ID tracking in the 1st-party state and is used as a reference ID if the AMCV cookie has expired.
Who sets it
Consent category: marketing
Marketing cookies follow visitors across sites to build advertising profiles and to measure campaigns. They always require prior consent, and a consent banner has to block them until the visitor agrees.
| Name | s_ecid |
|---|---|
| Category | Marketing |
| Lifetime | 2 years |
| Set by | Advertiser's website |
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From the Conzent cookie database, last updated 2026-11-12. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.