I just plugged a Toshiba 1.5 TB External hard drive in and found a new folder that wasn't there the last time. It's titled "311700553bbab72ec1b0" with a subfolder titled "update". I am the owner, therefore the administrator of the computer with full rights, but I cannot access "update" to see what's inside it, nor can I delete it. I was not involved in putting it there, and I don't know where it came from. The hard drive was not plugged in during any recent file installations. When I try to delete it, I get the standard "Access is Denied. Make sure the disk is not full or write-protected, and that the file is not currently in use". Virus scans reported "Scan complete on 0 items", and the folder size is 0 bytes.
How can I delete this folder, and prevent it from doing anything that I don't know about to my computer? And does anybody know where it came from?