Important files should not be stored in fake or counterfeit drives, which can be detected using tools like H2testw, FakeFlashTest, USB Flash Drive Tester, ChipGenius. Fake drives are prone to errors.

Know the flash write limit of your drive, and estimate when you might need to have it changed. But for really important files that need to be passed around using a frash drive, have it changed periodically (depending on utilization).

Power faults scramble your data. So have more backup and data integrity checks if and when you suspect you're affected by erratic power.

Encrypt sensitive information using TrueCrypt or VeraCrypt.