Samsung 850 Pro and PM851 solid-state drives and Seagate ST500LT015 and ST500LT025 hard disk drives, when in sleep mode and operating in Opal or eDrive mode on Lenovo ThinkPad T440s laptops with BIOS 2.32; ThinkPad W541 laptops with BIOS 2.21; Dell Latitude E6410 laptops with BIOS A16; or Latitude E6430 laptops with BIOS A16, allow physically proximate attackers to bypass self-encrypting drive (SED) protection by leveraging failure to detect when SATA drives are unplugged in Sleep Mode, aka a "Hot Plug attack."