USB隨身碟Autorun病毒免疫器 - Bitdefender USB Immunizer，開啟軟體後將USB隨身碟插入，USB小圖示顯示為紅色表示未免疫，按下USB小圖示後就可以進行免疫，其動作就是在隨身碟中產生一個名為autorun.inf的特殊權限隱藏資料夾，免疫後會變成綠色，藉此抵擋多數Autorun病毒的寫入，免疫後該隱藏資料夾只能夠用「格式化」來刪除。（阿榮）（下載）
Bitdefender USB Immunizer disables autorun-related threats before they access the computer. Once installed, it constantly watches for newly inserted USB storage devices and immunizes them on the fly. If you accidentally plug in an infected USB drive that has not been immunized, the computer will not auto-execute the piece of malware located on the USB storage device.
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