Lenovo ThinkPlus FU100 USB Drive Stores Data on Unencrypted SD Card Despite AES-256 and Fingerprint Claims

A Lenovo USB drive sold in China under the ThinkPlus FU100 model was marketed with AES-256 encryption and fingerprint authentication. Investigation revealed that the device contained an ordinary unencrypted SD card holding all user data. The fingerprint reader served only to enable or disable USB communication rather than performing any cryptographic operations. Security researcher Xusheng Li identified the flaw and disclosed it to Lenovo. The company confirmed the product was distributed exclusively on the Chinese market and subsequently issued both software and hardware patches. The case highlights risks of misleading security marketing claims on consumer storage devices.

ekurakTranslated from Polish

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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.

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