Wallet Security Manual · DOC WH-2026-002
Votre seed phrase EST cette clé. Dès qu'elle quitte vos mains — photographiée, collée sur un site web, envoyée au "support" — votre portefeuille ne vous appartient plus. Ce manuel couvre trois choses : comment les clés sont perdues, comment les protéger, et que faire si elles le sont.
Accessoire de démo · Ce que les arnaqueurs veulent le plus
* Ci-dessus sont des mots de démo, pas une vraie seed phrase. Cliquez sur les cellules pour retirer le sceau.
Le Livre des Menaces
No elite hacker required. No device breach needed. Most thefts travel these three most ordinary paths. Know the enemy first, then know what to defend.
Fake official sites, forged airdrops, "official" DMs — all using pages that look completely legitimate to trick you into entering your seed phrase or signing malicious transactions. The FBI reported over $5.6 billion in crypto-related fraud losses in 2023 alone.
Méthode: confiance armée · Cible: quiconque
Screenshots, cloud sync, typing into "verification" sites, sending to "customer support." The seed phrase is the only key to your wallet. Once it leaves your hands — even once — treat it as compromised. No exceptions.
Méthode: vol de la clé · Résultat: irrécupérable
Under the "mint""claim""stake" approval popup may hide an unlimited allowance. Scammers don't need you to send funds — they can drain everything within that limit yourself. You may not notice a thing.
Méthode: piège de signature · Résultat: drainage silencieux
Manuel de Défense
Ce n'est pas une liste de souhaits — c'est une séquence. Commencez à la règle une. Suivez chaque étape.
Write it by hand on paper. Lock it in a drawer or safe. Never screenshot it, never type it into any website, never send it to anyone. A digital seed phrase is already compromised.
Store large holdings in a hardware wallet (cold). Use a separate hot wallet for daily small transactions. The two wallets must have different seed phrases — if the hot wallet is compromised, the principal stays safe in cold storage.
After pasting, verify character by character. Focus on the first and last 8 characters. Save addresses to a contacts list. Compare every time — don't just glance at the first few.
Check the scope of approvals on unfamiliar contracts. Revoke unused ones at revoke.cash. Beware of clone domains — verify the tool's own URL before confirming anything.
Large transactions should require hardware confirmation and second-factor auth. For team or family funds, use a multi-sig wallet — no single person can move everything.
Write down in advance: what to do if your device is lost, if you suspect a leak, if you send to the wrong address. List the steps now, follow them later — don't decide in a panic.
Coffre Seed
"Écrivez-le sur du papier" n'est que la moitié de l'histoire. L'écrire est seulement le début — comment vous le stockez détermine s'il survivra 30 ans, et s'il passera jamais près d'un réseau.
Paper can be flooded, burned, eaten by insects. For long-term large holdings, metal backup (engraved stainless steel plates like Cryptosteel or Billfodl) is recommended, or at minimum waterproof paper cards with lamination. Any "digital seed phrase" in screenshots, documents, or cloud storage should be treated as compromised.
Use Shamir Secret Sharing to split your seed phrase into multiple parts stored separately (e.g. 2-of-3, 3-of-5): losing any single shard isn't fatal, leaking any single shard isn't fatal either. Best for large long-term holdings — but the shard rules themselves must be stored as securely as the seed phrase.
Main copy + backup copy + emergency copy (at a trusted person's place), stored in different physical locations. Each copy must guard against being "seen" — a roommate, a security camera, a repair worker could all become witnesses.
Generally no. Password managers live on internet-connected devices — one malware infection and your seed phrase is gone. The only truly safe "digital seed phrase" exists on a fully offline device, and even then there's still the risk of being photographed or cloud-backed up. Beginners should skip this route.
One wrong word in your seed phrase and recovery will fail. After writing it down, practice recovery right away: delete your wallet, recover using only the paper words, confirm it works — this is the only way to verify your backup is actually good.
NEVER screenshot it. NEVER type it into any website. NEVER send it to anyone — including those claiming to be official, security experts, or customer support. NEVER put it on any internet-connected device.
Drapeaux Rouges
Les arnaques évoluent constamment, mais leurs failles ne changent jamais. L'une d'elles suffit pour vous faire vous arrêter, vérifier et partir.
"Last 2 hours""Account will be frozen if you don't act." Official channels never manufacture urgency. Pressure is scam's first hallmark.
No legitimate project will ever ask for your seed phrase or private key. If they ask, it's a scam. No exceptions. No "verification."
wallet-connect-verify.com, or one or two characters off from the official spelling. Check the address bar. Don't check the page content — the page itself is fake.
Official support never DMs you first, and they never pull you into a "recovery group." "Official" contacts that come to you are, by default, fake.
An "airdrop" that asks you to send funds first is a pay-to-receive phishing trap. Real airdrops never require you to pay anything.
Can't understand the English in the approval popup? It says "unlimited"? If you don't understand it, don't sign. Close the page and come back later.
Fichier d'Arnaque
Parcourez les drapeaux rouges de la FEUILLE 04 dans une séquence réaliste. À chaque étape, le côté gauche montre le mouvement de l'arnaqueur, le côté droit montre ce que vous devriez faire maintenant.
You receive a DM (Telegram / Discord / X): "Hello, we're the official XX team. Congratulations — you qualify for an airdrop. Claim here: xxx-claim.com."
Don't click. Links in DMs are phishing by default. Verify through official channels — cross-reference SHEET 06, or search the official announcement directly.
The fake site (domain xxx-claim.com) looks identical to the real one — even sporting a fake "official site" badge, with a giant claim button on the homepage.
Check the address bar domain against the official entrances table, character by character. Page content can be faked. A domain cannot — you just have to look.
The page asks you to "connect wallet," or directly asks you to "enter your seed phrase to verify identity." They claim this is a required step for the airdrop.
A seed phrase must never be entered into any website. Connecting your wallet is fine — but watch the next approval popup carefully. That's the real battlefield.
The signing popup reads "Approve unlimited amount of TOKEN," with a countdown timer designed to rush you.
If you don't understand it, don't sign. See unlimited? See a countdown? See any pressure? Click "Reject," close the page, and come back later.
Assets are drained in bulk within minutes. Once a chain transfer is confirmed, it cannot be reversed.
Immediately execute SHEET 07 Emergency Checklist Step 1: move remaining assets to a brand-new wallet (new seed phrase). Isolate first, investigate later.
The scammer doesn't rush — they slowly drain within the approved limit. You may not notice for days or weeks.
Immediately revoke that contract approval (revoke.cash — verify the domain first), then monitor your balance closely.
Pourquoi cela importe: Une arnaque n'est pas un seul mouvement — c'est une chaîne de quatre étapes: contact, appât, entrée, signature. Chaque étape a une faille, toutes documentées dans la FEUILLE 04. Vous n'avez pas besoin de mémoriser chaque arnaque. Il vous suffit de faire une pause d'une seconde à chaque étape: Est-ce un DM? Le domaine est-il correct? Demandent-ils ma seed? Comprends-je ce popup?
Entrées Officielles
La plupart du phishing commence à partir de positions publicitaires dans les résultats de recherche ou de liens dans les DMs. Donnez-vous un point d'entrée fixe: n'accédez aux sites de portefeuille que via ce tableau, et vérifiez toujours le domaine de la barre d'adresse.
Domaines vérifiés en août 2025. Si vous recevez jamais un "nouvel URL", revenez d'abord à ce tableau, ou double-vérifiez via les comptes sociaux officiels du portefeuille — les domaines clones diffèrent souvent d'un ou deux caractères seulement. Téléchargez les applications uniquement via les liens sur le site officiel, ou recherchez le nom complet du développeur directement dans l'app store officiel.
Note SSL: Les sites de portefeuille légitimes utilisent tous HTTPS, mais notez que un certificat SSL signifie seulement que la connexion est chiffrée — cela ne signifie pas que le site web lui-même est digne de confiance. Vérifier le domaine et la barre d'adresse reste le contrôle le plus fiable.
Manuel d'Urgence
Il n'y a qu'une seule séquence: isolez d'abord, investigatez ensuite. La sécurité des actifs passe toujours avant de comprendre ce qui s'est passé. Exécutez chaque étape:
Move assets to a brand-new wallet (new seed phrase) right now — don't wait a moment. The new seed phrase goes only on paper. Treat the old one as compromised; never use it again.
Revoke suspicious contract approvals at revoke.cash (verify the domain first), then watch your balance closely. Not sure which approvals are suspicious? Revoke them all. Re-authorize only what you actually need.
Contact the project team and exchanges immediately to attempt freezing (the window is short). Preserve all evidence (transaction hashes, chat logs, links), then report to authorities. On-chain transfers are usually irreversible — that's why the first two steps always come first.
Never pay anyone to "unlock funds" or "recover lost assets." Those claiming they can help you recover are the second wave of scammers, targeting people who just got burned.
Mythes Courants
Quatre des rationalisations les plus courantes — chacune ouvre une autre porte à votre portefeuille.
Bulk-scanning scripts don't discriminate. They scan for assets and exposures on-chain. Small accounts are on the same list.
They protect against remote theft — they can't stop you from typing your seed phrase into a phishing page. A hardware wallet is only as safe as the hands holding its seed phrase.
Groups are public. Anyone can rename themselves "support." Impersonating official staff is the most common starting point for scams in crypto.
Checksum addresses distinguish case. Imposters construct visually similar addresses. Verify completely — at least the first and last 8 characters, and cross-reference with your address book.
Glossaire
Toutes les sections ci-dessus supposent que vous connaissez ces termes. Si vous coincez en lisant, revenez à ce tableau. Ceci est l'annexe du manuel — et aussi son point de départ.