Colleague at another University can access SharePoint Word files without explicit permission
I could use some insight here. I work in a higher education institution in Canada and SharePoint is our main platform. Three months ago, I logged into my Microsoft account on a friend's Mac computer to access a file and logged out afterwards. This friend works at a different university in Canada. As of today (3 months later) she told me that when she opened Word and went to "recent files" she can see all of MY recent files that I have opened on my work SharePoint, including confidential contracts and other files. She said she uses her "recent files" all of the time and this is the first time she has been able to view my files. What is happening exactly and how do we fix this? It is Friday so I won't be talking to our IT team until Monday.