

The drive can otherwise be used normally and files (even malware) copied to/from it, but they will be prevented from opening automatically. Once applied it effectively disables Windows from automatically executing any malicious file that might be stored in that particular USB drive. When applied on a USB drive, the vaccine permanently blocks the AUTORUN.INF file, preventing it from being read, created, deleted or modified. The free Panda USB Vaccine also can be used on individual USB drives to disable its AUTORUN.INF file in order to prevent malware infections from spreading automatically. The free Panda USB Vaccine allows users to vaccinate their PCs in order to disable AutoRun completely so that no program from any USB/CD/DVD drive (regardless of whether they have been previously vaccinated or not) can auto-execute.
