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counterfeits and fakes continue, buyers be aware and do due-diligence always

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gadget42:
counterfeits and fakes continue, buyers be aware and do due-diligence always

https://arstechnica.com/gadgets/2024/02/rejected-chips-hidden-microsd-cards-plague-the-usb-stick-market/

Rich:
Hi gadget42
Last summer I purchased an 8 Gig SD card for my camera
at Best Buy. I used the f3 (Fight Flash Fraud) utilities on it:
https://fight-flash-fraud.readthedocs.io/en/latest/introduction.html
and it failed, so I returned it. Last December I ordered a couple
of 4 Gig cards from Amazon, and they passed.

I downloaded version 8.0 from here:
https://github.com/AltraMayor/f3/tags
Then:

--- Code: ---tce-load -wi compiletc
unzip f3-8.0.zip
cd unzip f3-8.0
make
--- End code ---

Then to test a card:

--- Code: ---mount /dev/sdf1
./f3write /mnt/sdf1
./f3read /mnt/sdf1
--- End code ---
I think the write process took about 10 minutes.
I don't recall how long the read process took, but
I'm certain it was much quicker.

gadget42:
more links for future visitors convenience:
https://fight-flash-fraud.readthedocs.io/en/latest/index.html
https://oss.digirati.com.br/f3/
https://fightflashfraud.wordpress.com/
https://sosfakeflash.wordpress.com/

and one for the microsoft windows people:
https://www.grc.com/validrive.htm

@Rich, thank you for your wonderful post!

patrikg:
I can very recommend ThioJoe short video regarding this scams drives.
And faster program that not scans the hole drive, sadly I think it's only for Windows.

Maybe some one can write similar program for the other platforms.

https://youtu.be/xMgEHy1A9QA

Rich:
Hi patrikg

--- Quote from: patrikg on February 08, 2024, 06:18:23 PM --- ... And faster program that not scans the hole drive, ...
--- End quote ---
As you saw in the video, these scammers create their own firmware
to make these devices look like something they are not. They already
create fake directory entries to make it look like files were saved. I'm
sure they are capable of figuring out ways to evade partial size tests
like ValiDrive which states it does a 576 region spot check. There's
nothing to stop them from keeping track of the most recently written
locations so they are available for reading back when requested.

Testing the whole device is the only way to be certain. Leaving untested
holes just leaves openings for the scammers to eventually exploit.

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