What is the __eoi cookie?
This cookie is used for security authenticate users, prevent fraud, and protect users as they interact with a service.
Our October 2026 scan found it on 33 sites (1% of the 2,450 we scanned), set before any consent.
- Purpose
- Necessary
- Belongs to
- Google AdSense
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- 6 months (vendor says: 3 Months) — longer than the vendor documents
Sites that set __eoi before consent
The highest-ranked 30 of 33 sites.
- globo.com24 tracking companies
- indiatimes.com18 tracking companies
- target.com5 tracking companies
- nbcnews.com20 tracking companies
- tabelog.com6 tracking companies
- fanfiction.net3 tracking companies
- netkeiba.com20 tracking companies
- tenki.jp27 tracking companies
- ppomppu.co.kr2 tracking companies
- kolkataff.tv3 tracking companies
Show 20 more sites
- loteriasdominicanas.com14 tracking companies
- inc.com18 tracking companies
- hatena.ne.jp19 tracking companies
- fotmob.com8 tracking companies
- ifeng.com5 tracking companies
- axios.com5 tracking companies
- histats.com2 tracking companies
- aarp.org30 tracking companies
- idnes.cz42 tracking companies
- ctvnews.ca38 tracking companies
- caniuse.com3 tracking companies
- today.com19 tracking companies
- donga.com8 tracking companies
- newsbreak.com9 tracking companies
- nicovideo.jp24 tracking companies
- united.com7 tracking companies
- pchome.com.tw6 tracking companies
- globalnews.ca10 tracking companies
- yallakora.com5 tracking companies
- conectate.com.do10 tracking companies
Related cookies
Other cookies from Google AdSense.
- _gcl_au336 sites
- FCCDCF141 sites
- receive-cookie-deprecation136 sites
- __Secure-YNID113 sites
- g_state92 sites
How to stop it
Declining non-essential cookies in a site's consent banner should stop optional cookies, though a necessary cookie like this one may still be set. Blocking third-party cookies in your browser settings stops the third-party kind everywhere, and clearing cookies for a site removes any it already set.
Description from the Open Cookie Database (Apache 2.0).
Understanding this page
- How cookie lifetimes work, and why a 13-month _ga matters
What a cookie's "expires" field actually controls, why Google Analytics ships a 2-year default that many sites cut down to 13 months, and how Safari's 7-day cap on script-set cookies changes the picture.
- First-party vs third-party cookies (and why "first-party" still tracks you)
What the distinction actually means technically, why browsers only block one of the two, and how CNAME cloaking, server-side tagging and cookies like _ga let sites keep tracking under their own domain.
- How to block or limit trackers
Browser privacy settings, content blockers, Global Privacy Control and clearing cookies compared honestly — what each one actually stops, what it doesn't, and what it costs you in return.