Library staff accounts and authentication accounts for 3rd party services permit access to Evergreen and all the data for your library contained within.
Co-op Support strongly recommends:
If you see staff accounts with the name Sitka please leave them be. These are troubleshooting accounts used by Co-op Support.
If you cancel a subscription or retire a piece of hardware, like a self check, that authenticates through Evergreen please let Co-op Support know as soon as possible. This enables us to remove accounts associated with the service so that your patrons' information is no longer available to the vendor.