One of the security researches urges ledger users that a potential issue may be that recovery seeds or private keys may be compromised. A new firmware update is available and you should consider resetting your device for a new recovery seed. (remember to move coins/tokens off of the device first)
Please see below for the new firmware update page on official Ledger page.
https://www.ledger.fr/2018/03/06/new-firmware-update-1-4-1-available-for-the-nano-s/
Although it is believed to just be relevant to Ledger Nano S some are speculating it may be relevant to other ledger devices.
The above is not my personal advice and you should do your own due diligence before taking any steps or actions which are mentioned in this post.
