This is very strange. I can not find an answer to this. On Sunday 12/05/16 i had my computer on using photoshop. I used it for a few hours and turned it off. On Monday 12/06/16 I got home from work and had an email from Ebay stating "MC999 Unauthorized use of your account -- Action required" I had to reset my password / phone number and finally got into MyEbay to look at the messages. On 12//05 Ebay had sent that message but after someone had bought Microsoft Office 365 - 5 uses per month. I then got paranoid and checked my computer and sure enough someone installed Microsoft 365 on my computer during the day on Sunday 12/05. How can this happen or be?