Version 10.0 is available upstream. Please consider updating! It seems that version 10.0 is available upstream, while the latest version in the Gentoo tree is 9.0. You think this warning is false? Read more about it here.
F3 - an alternative to h2testw
The "Fight Flash Fraud" or "Fight Fake Flash" tool represents
a GPLv3 implementation of the algorithm of h2testw and further
improvements to speed up the identification of fake drives
as well as making them usable.
You can also use these utilities if you want to test the
integrity of your USB/flash medium.