https://www.reddit.com/r/btc/comments/7ojvca/i_am_the_guy_that_lost_25000_due_to_ledger_scam/
https://www.reddit.com/r/ledgerwallet/comments/7oqsff/potential_compromisedsetup_wallets_still_out/
TL:DR - A guy bought a Ledger Nano S off a reseller on Ebay. It came with the seed preinstalled and written on an official looking scratch card. As he didn't know better he loaded it up only for it to be emptied shortly after.
The reseller didn't do it. The supplier to him did.
Generate a new seed on your devices, kids.
That's one way to create the ability to wholesale the Ledger cheaper than anyone else!