I received a pop-up dropbox notification to share with a "Losurdo Inc". I never received one from someone I don't know or action I didn't make. I pressed it to see what it was but it popped up and I deleted it. It remained in activity and recent files without the 3 dots. All my other files have them so I can delete. The file was named " Losurdo Inc_Missing PO#32686.docx". I disconnected all my devices and Uninstaller then installed back. I no longer see it, but how can a party have access to dropbox to send a dropbox notification? Have I been hacked? Any advise would be helpful. Thanks, K2A