You are responsible for Cornell data stored on computers you use. You are the custodian of that data. This is established in numerous Cornell policies. See An Overview of University Policies on Computer Security and Data Protection.
As stated in University Policy 4.12, Data Stewardship and Custodianship, the university expects all stewards and custodians of its administrative data to manage, access, and utilize this data in a manner that is consistent with the university's need for security and confidentiality. Cornell University administrative functional areas must develop and maintain clear and consistent procedures for access to university administrative data, as appropriate.