Waiting to trap us guys and gals into buying them...Noticed a lot going over the last month or so, at least more than usual!

Mainly no brand devices in the range of 32 to 128GB, all very cheap of course.

I suspect that some otherwise reliable sellers are getting conned into selling  these things without any real checks.

I bought a 32GB drive for $2.70 that didn't live up to it's name (well actually it didn't really have a name, just a 32GB sticker!)

They can start off being written to OK, then run out of real room, throw data away, or start writing data back over what is already written , very convenient.

Tests using FAKEFLASHTEST v1.1.1  showed "Device has duplicate or bad blocks"

The testing program and instructions are available here..

http://www.rmprepusb.com/tutorials/-fake-usb-flash-memory-drives

I found it ran very slowly on the faulty drive but very fast on a good drive.