) is a high-speed USB 3.0-to-Flash micro-controller designed by Phison Electronics Corp. . This controller is a staple in the world of consumer storage, found in numerous popular USB drives from brands like Kingston, Lexar, and Kodak. Technical Architecture
: The chip contains a single 8051-compatible core and embedded MaskROM. On power-up, the bootloader searches the attached NAND flash for firmware to load into its internal RAM. phison ps225107ps2307 upd
. On power-up, it searches the attached NAND chips for firmware to load into its RAM. The "2307 PRAM" State ) is a high-speed USB 3
The PS2251-07 gained notoriety in the cybersecurity world because its firmware could be modified to perform "BadUSB" attacks. By re-flashing the controller with custom code, a standard USB drive can be programmed to emulate a keyboard and execute malicious commands automatically when plugged into a computer. Summary for Users Technical Architecture : The chip contains a single