See topic:
satoshin@gmx.com is compromised
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https://bitcointalk.org/index.php?topic=775174.0and with regards to the PGP Key here is why a Signed message should still be considered as one empirical source of evidence as 'proof' of satoshi ...
...snip...
As far as I know, the PGP key has never been signed or in fact been used to sign anything, whatsoever.
This indicates to me that the Key is still to be 'trusted'.
The GMX email service did not incorporate encryption in the web service back then.
So, in all likely hood this PGP key was generated on the very same machine that satoshi used to build and compile early Bitcoin (BTC) wallet releases.