A Lenovo USB flash drive sold in China under the ThinkPlus FU100 model was advertised as featuring AES-256 encryption unlocked by a fingerprint reader. The device was positioned as a high-security, military-grade storage solution.
Security researcher Xusheng Li discovered that the drive contained a standard, unencrypted SD card that stored all user data in plaintext. The fingerprint sensor did not perform any cryptographic functions; it only toggled USB communication on or off.
Lenovo issued an official statement confirming that the ThinkPlus FU100 had been sold exclusively on the Chinese market. The company worked with the researcher to develop both software and hardware fixes that address the missing encryption implementation.


