Heres info about the hack here https://medium.com/@thepariscormier/how-to-hack-a-ledger-hardware-wallet-c38a4ac49d59
This is actually scaring.
heres one about a man who had all his BTC stolen after buying a ledger on ebay 
https://news.bitcoin.com/mans-life-savings-stolen-from-hardware-wallet-supplied-by-a-reseller/
https://news.bitcoin.com/mans-life-savings-stolen-from-hardware-wallet-supplied-by-a-reseller/As for the man who bought the Ledger from Ebay, that should be a lesson for everyone. You have to chose carefully a reseller that you can really trust.