The red circle is the file, the folder containing the autorun virus.
However, if you have some experience, these viruses will not be your concern. As a precaution, you can do it by manipulating your own hands or using automated software.
Use ' manual shield'
To avoid being infected with autorun virus, you absolutely cannot open the USB drive with double operation but open Windows Explorer ( Windows + E ) window first, then click the plus sign (+) in front of the USB drive name at Directory tree to the left of the interface.
To prevent viruses from hiding folders, you need to be careful when opening a folder in a USB drive with double-click operation, it is best to use directory retrieval as an autorun antivirus.
In addition, the recognizable feature of the hidden virus folder is that they often create a folder right in an existing folder, and with the same name as that available folder, the virus-created folder has the same color as above. Windows, they are dimmer (visible to the naked eye) . Meet suspicious folders like this and make sure you don't create them, so go with Shift + Delete.
Use 'software shield'
With the support of USB Device Protection , your computer will have a fairly secure shield, every virus intrusion is unlikely to happen because there is always a warning if the program detects autorun or virus. hide the folder inside.
USB Device Protection is a free, compact tool that helps you safely protect your computer whenever you insert a USB drive. Not only does the warning help USB Device Protection help you to handle files and folders created by viruses. If the computer has a file hidden by the virus, the program will also help restore the data to the prototype.