The key was "generated" on Mar 7th.
Can you sign a message with a private key of 1Bn9ReEocMG1WEW1qYjuDrdFzEFFDCq43F to be sure that you own this private key?
Seems to me that your application has bad random number generator.
amspir owns this key.
IFLrTIFGi3t8H1zVuKhr4FScU0RUgUWU26U8dpIyCT7XMXB0HmEFJt6ouyBTwpyhOz+3WcydRU7FQauHuyBxZGg=
I think it is probable that it is a weak PRNG, but it may be that the device was compromised and altered the PRNG seed in some way.
Mostly, I am wondering if the output transactions appear "suspicious", such as going to a mixer, which would imply that the other key owner targeted this address on purpose. The address does have a public label, not set by me, on blockchain.info of "000000"