r/ledgerwallet 16d ago

Official Ledger Engineering Response Ledger just shipped experimental post-quantum cryptography support in the Ledger SDK — here's what that actually means

18 Upvotes

Hey everyone,

I wanted to share something the Ledger OS team has been quietly working on: we've just added experimental support for ML-KEM and ML-DSA, the two post-quantum cryptography algorithms that NIST recently standardized (FIPS 203 and 204).

These algorithms are now running directly on the Secure Element on all Ledger signers from the Nano X onwards (chronologically speaking). We've exposed them as experimental APIs in both our Rust and C SDKs for anyone who wants to play with them.

This is experimental. The implementation isn't fully hardened yet, so please don't build production apps on top of it. The blog post goes into details regarding this aspect.

The blogpost covers the quantum threat context, the lattice-based math underneath these algorithms, how they're constructed, and a deep dive into our implementation and API.

📖 Blog: ledger.com/blog-post-quantum-cryptography-ledger-sdk

🛠️ Rust SDK: github.com/LedgerHQ/ledger-device-rust-sdk

🛠️ C SDK: github.com/LedgerHQ/ledger-secure-sdk

Happy to answer questions about the implementation, the threat model, or why we made the choices we did.

Cheers!


r/ledgerwallet 20d ago

MiCA grace period ended on July 1. A plain-English guide to custodial vs self-custody for EU holders

7 Upvotes

TL;DR: Some crypto exchanges began to suspend crypto-asset services for EU residents from July 1, 2026, when the Markets in Crypto Assets Regulation (MiCA) grace period ended. MiCA is a useful moment to understand one distinction: on an exchange a third party holds your keys, while in self-custody you hold them yourself. If you want to move to self-custody, you’ll need to set up your hardware wallet first, verify the address on the device, and send a test amount before moving the rest.

What is happening with Binance and MiCA?

Binance is suspending crypto-asset services for EU residents from July 1, 2026, after it did not obtain authorization under the EU's Markets in Crypto-Assets Regulation (MiCA) before the June 30 deadline. MiCA's transition period ends on July 1, 2026, after which any crypto-asset service provider must hold a MiCA license to serve EU clients. 
For the EU framework itself, see our glossary definition: https://www.ledger.com/academy/glossary/mica-legislation 

What is the difference between custodial and self-custody?

On an exchange, a third party holds the private keys and you hold a claim on your assets. In self-custody, you hold the private keys yourself, so no provider's licence or status affects your access. This distinction exists independently of MiCA, which regulates the services exchanges provide, not the assets themselves.

Custodial (exchange) Self-custody (Ledger signer)
Who holds the private keys The exchange You
What you hold control over A claim on the assets The assets directly
Access depends on a third party Yes No
Affected by a provider's license status Yes No

How do I move my crypto to self-custody safely?

  1. Set up your destination first. Set up your Ledger signer and Ledger Wallet™ app, generate your receiving address, and confirm that address on the device screen before withdrawing anything.
  2. Send a test amount. Move a small amount of one asset, wait for the transaction to confirm, and check funds arrived at the correct address. Then move the rest.
  3. Move one asset at a time. This keeps fees manageable and reduces the chance of errors while withdrawal queues are busy.
  4. Back up your Secret Recovery Phrase offline. Write it down and store it somewhere safe and private. Never photograph it, type it into a website or app, or store it in your notes or cloud. A metal backup protects against fire and water.

Rather watch a video? Check out this tutorial, here: https://youtu.be/ztlV5gOmgZk?si=mt0bEFgdQrTQUUIV 

Key terms

  • MiCA: the EU's Markets in Crypto-Assets Regulation, the first unified EU framework for crypto-asset service providers. Reference: https://www.ledger.com/academy/glossary/mica-legislation
  • CASP: a Crypto-Asset Service Provider, such as an exchange or custodian, that must hold MiCA authorization to serve EU clients.
  • Private key: the secret that controls a crypto asset. Whoever holds the key controls the asset.
  • Self-custody: holding your own private keys directly, with no third party between you and your assets.

r/ledgerwallet 2h ago

Help, erc-20 token not showing in Ledger live

0 Upvotes

Dear redditors,
I recently got a new laptop and installed Ledger Live on it. I connected my Ledger Nano S and added the accounts for a number of coins I own. Unfortunately, I still can’t manage to add my EURC account.
In Ledger, when I click Add account, I can select the Ethereum network for EUROC. But for EURC (without the “O”), I only get Avalanche, Base, and Solana as network options. With EUROC, I can select the Ethereum network, but then my EURC still doesn’t appear in the account.
If I look up the address on the internet, I can see the EURC sitting on that address just fine. Can anyone help me figure out how to get this into Ledger Live? I want to send some of it to an exchange.
Thanks in advance for any replies.


r/ledgerwallet 4h ago

Official Ledger Customer Success Response Stax Driver Error

1 Upvotes

After a update 2 months ago I can no longer connect my Stax to my pc. Ive factory reset my stax and recovered a few times. Also uninstalled Ledger Wallet and reinstalled several times. All to no avail.

Ive had to remove stax as my 2 factor auth on all financial apps.

Any thoughts?


r/ledgerwallet 18h ago

Official Ledger Customer Success Response My Ledger Stax have proplem with sreen

0 Upvotes

My Ledger Stax wallet's screen is showing color distortion. Currently, it's similar to a faulty e-ink e-reader screen. The corners are darkening, and the black and white colors are starting to blend together. This is followed by increasingly annoying ghosting.

I bought it on July 2nd, 2025.

I guarantee there have been absolutely no impacts, drops, or physical damage. When I contacted the official reseller, they claimed it was because I removed the screen seal and refused to provide support.

I wonder what removing the screen seal has to do with anything?

Can I now request that the manufacturer inspect and replace it with a completely new one?


r/ledgerwallet 1d ago

Official Ledger Customer Success Response Do you spend crypto or is your Ledger strictly cold storage?

9 Upvotes

I've always treated my Ledger as long-term storage but it got me wondering how everyone else approaches it. Whenever I want to use crypto, I usually have to move funds to another wallet or an exchange first. It works but it feels like more friction than there should be.

Interested to hear how everyone here manages it


r/ledgerwallet 2d ago

Official Ledger Customer Success Response New To Ledger

12 Upvotes

I just bought a Ledger Flex and I'm calling it an upgrade from my Trezor Model T. I am concerned by the number of people posting here about being scammed or had their account drained. I never had any issues with the Trezor and liked it well. I know very well not to give out any data such as seed phrases, etc. Is this something I need to be more concerned over than I was with the Trezor?


r/ledgerwallet 3d ago

Official Ledger Customer Success Response Ledger Wallet Phishing Victim

18 Upvotes

I just want to preface by saying I have no one to blame but myself. I broke the rule of no entering your seed phrase on your computer. Throwaway account for obvious reasons.

I opened up my ledger wallet app on my computer today and was greeted with a message saying that there was a genuine check required in order to sign into my account and that I needed to input my 24 word seed phrase. Should have been obvious to me that it was a scam but I trusted since I haven't had issues with Ledger in the past and I downloaded it off the official site months ago, I trusted it. As soon as I put in my phrase, it said it was "unable to verify". My heart immediately sunk as I realized what I just did. I wasn't thinking. Again, no one to blame but myself.

When I opened up the app, I saw exactly the same thing this guy in the reddit post above posted in the very last slide about entering the 24 word seed phrase in the correct order.

I did some digging and came to the conclusion that possibly my computer was affected by malware and altered my ledger app. I tried to transfer all my crypto back to my exchange but it was too late, they drained my account within five minutes. I lost about $2100 across BTC, ETH, and SOL. Painful, expensive mistake. It's not the end of the world but it definitely hurts. I know my Ledger Nano S is compromised at this point. I already wiped my MacBook clean but is there anything else I should do? I've filed a report with IC3 and Chainabuse but realistically I probably won't get my money back. Really trying not to beat myself up.

TLDR: Broke the one rule about cold wallets, now my wallet is drained.


r/ledgerwallet 4d ago

Official Ledger Customer Success Response Any plans to add Bluetooth support on desktop in the future?

7 Upvotes

Does Ledger plan to allow Bluetooth enabled devices to connect to a PC through Ledger Wallet? OneKey added this feature a few months ago to their Pro devices, and ever since then I've found myself not using my Ledger because it's much more convenient to connect to my PC over Bluetooth than using a cable or pulling out my phone every time I want to use it. If there are no plans, I would highly suggest considering it in the future because it makes the user experience so much better.


r/ledgerwallet 3d ago

Official Ledger Customer Success Response What if

0 Upvotes

Hello everyone,

So I got some btc/eth/bnb in a hardware wallet LEDGER. I am thinking what if my pendrive stops working or LEDGER site itself goes bankrupt.

How do I recover my coins?

You will say "you need to write down your keys", yes yes but HOW do I get my ledger hardware keys?


r/ledgerwallet 6d ago

Discussion ZachXBT calls hardware wallets "garbage", says Ledger is the worst

Thumbnail crypto.news
24 Upvotes

r/ledgerwallet 6d ago

Stacking ETH

2 Upvotes

I wanted to stack my etherum on Ledger live application. I have 3 eth, but when i want to stack them on Chorus or other pools (i have tried all of them), nothing append, is it a bug from the application?

Thanks you


r/ledgerwallet 6d ago

Official Ledger Customer Success Response Stacking Ethereum bug?

1 Upvotes

I wanted to stack my ethereum on Ledger live application. But when i want to stack them on Chorus or other pools (i have tried all of them), nothing append, is it a bug from the application?

Thanks you


r/ledgerwallet 6d ago

Official Ledger Customer Success Response Ledger Wallet Grid View

3 Upvotes

What happend to the ledger wallet grid view under accounts? That was a nice feature and my default setting under accounts. I think the current UX sucks! I hope you bring that option back.


r/ledgerwallet 7d ago

Official Ledger Customer Success Response Anyone else notice that if you let the battery completely die on a Nano X, it won’t hold a charge ever again?

18 Upvotes

I thought they had fixed this issue but maybe not. I have maybe cycled through 3 Nano X’s due to this issue.

My most recent nano X, the sleek Black on Black nano X you got from redeeming the Ledger Market Pass, finally died. I forgot to charge it for a month and when it ran out of batter, I tried to charge it and was hit with the “Battery charging problem” that all the others hit.

Finally decided to upgrade to a Ledger Flex but was just curious if anyone else noticed this issue.

If you haven’t messed with your Nano X in a while because you’re trying to set it and forget it, there is a chance that it does not hold a charge anymore. I would check it out if I were you guys.


r/ledgerwallet 8d ago

Official Ledger Customer Success Response Does anyone not use the ledger recovery key?

12 Upvotes

I always hear of folks loosing there keys why not get the recovery key it's an amazing tool and a great backup solution.

Am I'm assuming right though, it will only work on stax, flex and nano gen5 with NFC capabilities. I bought 3 when they were a great deal gave them to trusted family members and one in the safety deposit box.....

Isn't it better than paper and the metal boxes that give the possibility of being found?

Just a thought


r/ledgerwallet 8d ago

Official Ledger Customer Success Response How to get rid of this?

Post image
5 Upvotes

I'm on the mobile app.


r/ledgerwallet 9d ago

Official Ledger Customer Success Response Found OLD Nano S Wallet a decade old, how to save funds?

11 Upvotes

Update: after what seems like a lot of overthinking I’ve decided to go the simple route and just get a new device to do the transfer, it gives me the most peace of mind. Thanks for everybody who helped!

Was cleaning out some areas at my parents home and re-discovered my old nano S that had been “bricked” (not sure what happened but just remembered it not working)

I didn’t even remember having much or anything in the device so I just tossed it, as it still just didn’t come to life when connected to usb power

However not long after I actually found the damn key to the thing! And for some reason I had saved my btc view key separately, so I went ahead and imported that into a mobile wallet to check my balances and holy shit there’s like 15k in today’s prices! I guess I had bought a few hundred of btc back in 2017 ish when it was around a thousand and just forgot about it until now 😅

I’m asking here because not sure what is best course of action is to recover these funds. Should I buy a new hardware wallet and re import the seed? Should I just use an air gapped computer to sign a tx to an exchange? What would you guys recommend. I’m not necessarily trying to stay in the crypto game just want to cash this out asap


r/ledgerwallet 10d ago

Discussion is a swap aggregator safer than a cex for a one-off exchange??

8 Upvotes

my brother-in-law said this over dinner last week: "just use binance, why complicate it." meanwhile i'd been telling the people i help set up wallets the opposite, so it stuck with me. the popular take is that a CEX is the "safe" default. i disagree, at least for a one-and-done swap (not talking about active trading here, different question). the risk people forget is account risk. a frozen account, a random re-verify, whatever it is this month. your money is THEIRS until they decide otherwise. for a single swap you're taking on a bureaucratic risk you never needed.

when i'm picking a route for other people i keep landing on SimpleSwap because there's no account to freeze in the first place. you send the amount for the swap, it lands back in your own wallet, nothing sits parked on their platform waiting to get flagged.

fees sit in the rate, roughly the same 0.5-ish% band as everyone else last i looked. for a nervous first-timer moving real money across a chain, boring and predictable beats dealing with an exchange's mood.

anyone here actually had a CEX freeze mid-swap on them, or is this just theoretical paranoia on my part?


r/ledgerwallet 10d ago

Official Ledger Customer Success Response I need help

0 Upvotes

Can someone help me awakened my dough v2 I cant pay


r/ledgerwallet 10d ago

Official Ledger Customer Success Response Old ledger Nano S

3 Upvotes

I have an old ledger nano s on hand whose LCD gave out on me. Is it safe to use the LCD screen found on e bay as replacement> I plan to use the old ledger just for seed generation to be used for my other ledger wallets or other compatible wallets.


r/ledgerwallet 11d ago

Official Ledger Customer Success Response New interface gone already?

4 Upvotes

I was really enjoying the new interface, with stocks on the front page and such, but now it’s gone. Anyone know what’s going on? I want the new format back!


r/ledgerwallet 12d ago

Official Ledger Customer Success Response ledger makes me feel safe until i have to sign something i can’t read

30 Upvotes

This might be a dumb question but honestly this is the part of crypto security that still messes with my head.

I understand the basic stuff:

  • don’t type seed anywhere

  • don’t store seed in cloud

  • don’t sign random garbage

  • don’t connect Ledger to shady sites

  • use a separate hot wallet for degen stuff

  • test with small amounts first

Fine.

But then you get to the actual “using crypto” part and suddenly the wallet is asking you to approve/sign something that looks like alien language.

And that’s where I don’t feel safe anymore.

Not because Ledger is bad. Ledger is doing what it’s supposed to do. The keys are protected.

But I’m still the idiot pressing approve on something I barely understand.

Like if I’m staking, delegating, setting a proxy, approving some permission, interacting with a dapp, whatever… how am I supposed to know what exactly I’m allowing?

The thing I’m trying to understand is:

If my Ledger is disconnected after signing something, can that signed permission/proxy/approval still do anything later?

Or is every later action still needing another confirmation from the Ledger?

For example, I’ve been reading about TAO/Bittensor staking and some apps use proxy-style permissions where the idea is that the proxy can do limited staking/allocation actions but can’t move funds out of your wallet. Mentat explains it that way too, proxy can buy/sell subnet positions from your account but not transfer TAO outside it.

That sounds safer than sending funds to some random vault, but I still want to understand the actual security model before touching anything.

So I guess my questions are:

  1. What’s the real difference between an approval, a delegation, and a proxy?

  2. Can any of those drain funds later without the Ledger being connected?

  3. How do you check what permissions are currently active?

  4. How do you revoke them?

  5. Is there a good habit here besides “don’t sign what you don’t understand,” because tbh most normal people don’t understand 90% of what wallets show them

Not trying to spread panic. I’m just realizing “hardware wallet = safe” is only half the story.

The other half is “the human holding it should not be blindly approving hieroglyphics.”


r/ledgerwallet 12d ago

Official Ledger Customer Success Response App forces Spanish notifications based on IP, ignoring English UI settings

3 Upvotes

Using v4.10.0 in Spanish-speaking region. UI language and region are set to English, but your backend server forces Spanish notifications seemingly based on my IP. This breaks the app for expats.


r/ledgerwallet 12d ago

Official Ledger Customer Success Response WARNING: Physical Ledger letter and QR-code scam drained my Bitcoin this morning — fake “Post-Quantum Cryptography” update

13 Upvotes

This morning, 10 July 2026, I was caught by a very convincing physical-mail phishing scam targeting Ledger users.

I received a professional-looking letter claiming to be from Ledger. It contained my full name, postal address, the exact Ledger device I own, Ledger branding and an individual reference number.

The letter claimed that I urgently needed to complete a “Post-Quantum Cryptography Security Update” before 31 July 2026. It instructed me to scan a QR code.

I scanned the QR code and was taken to a website that appeared to be Ledger. It asked me to enter my 24-word Secret Recovery Phrase. Believing the letter and website were genuine, I entered it. I also followed what appeared to be a Ledger update prompt on my computer.

I NEVER CONNECTED OR PLUGGED IN MY LEDGER DEVICE.

That did not protect me.

Shortly afterwards, an unauthorised transaction emptied 0.00969157 BTC from my wallet. The transaction has now been confirmed and cannot be cancelled.

The important part I did not understand is that the 24 words are not merely a password or recovery code. They are effectively a complete backup of the wallet’s private keys. Anyone with those words can recreate the same wallet on another device and spend the funds without possessing the original Ledger or knowing its PIN.

A normal Ledger wallet is not two-factor security where both the physical device and the 24 words are required. The physical device protects the keys during normal use, but the recovery phrase can regenerate those keys somewhere else.

This is the point that needs to be made brutally clear during hardware-wallet setup:

THE 24 WORDS ALONE ARE EFFECTIVELY THE WALLET.

Do not:

- Scan QR codes from letters claiming to be Ledger.

- Enter your 24 words into any website, phone or computer.

- Trust a letter merely because it knows your name, address or device model.

- Believe claims about urgent verification, security upgrades, account suspension or “post-quantum” protection.

- Assume the physical Ledger must be connected before someone can take the funds.

Ledger now has an official support article called “Physical Mail Phishing Scam” describing this exact method and stating that it will never ask users to enter their recovery phrase online.

I am posting redacted photographs of the letter so other people can recognise the wording and layout. I have covered the QR code so nobody accidentally scans it.

I have reported this to ReportCyber and Western Australia Police. I understand that entering the recovery phrase was the critical mistake. I am posting this because the scam was specifically targeted, professionally produced and knew exactly which Ledger device I owned.

I do not currently know how the criminals obtained my name, address and device information, and I am not claiming that Ledger itself sent the letter.