`__hssrc`

Tells HubSpot whether you have restarted your browser since the last visit.

Owner: HubSpot, Inc.
Matches: The exact name __hssrc
Needed to Work: No. The site works without it.
Confidence: Verified
Source: https://knowledge.hubspot.com/privacy-and-consent/what-cookies-does-hubspot-set-in-a-visitor-s-browser
Last Reviewed: 2026-09-28

Which Sites

Any site. The name is specific enough to identify this cookie wherever it appears.