What is the __hssrc cookie?
Whenever HubSpot changes the session cookie, this cookie is also set to determine if the visitor has restarted their browser.
Our October 2026 scan found it on 47 sites (2% of the 2,450 we scanned), set before any consent.
- Purpose
- Advertising
- Belongs to
- Hubspot
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- Session (vendor says: session)
Sites that set __hssrc before consent
The highest-ranked 30 of 47 sites.
- techcrunch.com38 tracking companies
- seedtag.com4 tracking companies
- bidmachine.io13 tracking companies
- plos.org3 tracking companies
- businesswire.com6 tracking companies
- adroll.com11 tracking companies
- pusher.com3 tracking companies
- cpmstar.com3 tracking companies
- eskimi.com8 tracking companies
- primis.tech11 tracking companies
Show 20 more sites
- aniview.com3 tracking companies
- laravel.com7 tracking companies
- semanticscholar.org3 tracking companies
- geocomply.com7 tracking companies
- simpli.fi2 tracking companies
- ssl.com9 tracking companies
- aditude.io5 tracking companies
- joinmassive.com6 tracking companies
- riskified.com4 tracking companies
- asahi.com41 tracking companies
- moz.com11 tracking companies
- goguardian.com8 tracking companies
- jampp.com4 tracking companies
- mediavine.com1 tracking company
- gitbook.io7 tracking companies
- feedly.com5 tracking companies
- ably.io4 tracking companies
- omni-dex.io3 tracking companies
- tufts.edu12 tracking companies
- sundaysky.com16 tracking companies
Related cookies
Other cookies from Hubspot.
- hubspotutk47 sites
- __hssc46 sites
- __hstc46 sites
How to stop it
Declining non-essential cookies in a site's consent banner should stop __hssrc 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.