What is the HMACCOUNT cookie?
Used to send data to Baidu about the visitors device and behaviour. Tracks the visitor across devices and marketing channels.
Our October 2026 scan found it on 20 sites (1% of the 2,450 we scanned), set before any consent.
- Purpose
- Analytics
- Belongs to
- Baidu
- Set as
- First-party on 95% of sites, third-party on 5%
- Typical lifetime
- Session (vendor says: 1 year)
Sites that set HMACCOUNT before consent
The highest-ranked 20 of 20 sites.
- miui.com1 tracking company
- tradplusad.com1 tracking company
- wps.cn2 tracking companies
- umeng.com1 tracking company
- dnspod.com3 tracking companies
- ifeng.com5 tracking companies
- csdn.net1 tracking company
- wshareit.com4 tracking companies
- coloros.com1 tracking company
- jpush.cn5 tracking companies
Show 10 more sites
- kdocs.cn1 tracking company
- gitee.com1 tracking company
- ctrip.com3 tracking companies
- sina.cn1 tracking company
- 10jqka.com.cn2 tracking companies
- getui.com2 tracking companies
- chinaz.com2 tracking companies
- salesmartly.com4 tracking companies
- cnblogs.com1 tracking company
- dynadot.com7 tracking companies
Related cookies
Other cookies from Baidu.
How to stop it
Declining non-essential cookies in a site's consent banner should stop HMACCOUNT being set on later visits. 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.