Did I get hacked? I noticed my Safari browser had some really strange bookmarks
When I opened my Safari browser, I saw some really strange bookmark folders: Windows bookmark, HP site bookmark, My United States folder bookmark and it was empty and some other Windows bookmark. I thought that was very strange cause I don't remember checking HP or Windows, nor do I remember making a bookmark called "My United States" what is that???
I deleted those bookmarks and folders, now its back to normal but I want to know if I was hacked or not. I don't have any Antivirus or Internet security software installed on my iMac, I have downloaded the latest update for the OS X. I was told by an Apple staff when I purchased the iMac that I don't need to have any internet security/antivirus software so I never bothered with it.
iMac, iOS 8