Nobody knows my credentials (as far as I know). It was just me and noone else around.
Google knows your credentials, and what's the point of hardware wallet if you are going to keep seed words online... next time maybe post them in public on twitter or instagram account to make sure you lose coins faster.Your ledger was not hacked, and you made a big mistake.
Is there any possibility that anyone could guess the 24 words correctly randomly?
Don't be silly please 