812f2401_rivacy___Cookies___PlumbCenter__Description_and_Purpose
[Cookie Name] WC_GENERIC_ACTIVITYDATA [Session / Persistent] Session [First / Third Party] First Party [Description and Purpose] 
This cookie only exists if it is a generic user (-1002) session. This cookie stores the session values such as storeid, langid, contracts, etc.
Security Privacy & Cookies | PlumbCenter
Description and Purpose