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Protect a cryptocurrency wallet by keeping its recovery phrase private and offline, installing wallet software only from official sources, treating unsolicited support messages as phishing, and approving only transactions you understand. A hardware signer can keep cryptographic secrets isolated from a potentially compromised computer, but it cannot protect a recovery phrase you disclose or make a deceptive approval safe.
Keep your recovery phrase secret
Your recovery phrase is effectively a key to your wallet. Anyone who obtains it may be able to restore the wallet and move its funds. Never give it to a caller, website, message sender, or someone claiming to be customer support. Ledger says its support will never ask for the phrase, and Trezor’s official guidance says: “Never share your wallet backup (recovery seed) with anyone!” Ledger’s phishing guidance and Trezor’s scam guidance explain these warnings.
Keep the phrase offline and private. As a practical consequence, avoid photographing it, saving it in cloud storage, or pasting it into a website: those actions create additional ways for someone else to access it. Keep any physical backup somewhere secure, and do not mistake a particular storage material or product for a substitute for secrecy.
Recognize and handle phishing attempts
An unexpected message saying your wallet needs verification, recovery, migration, or urgent protection should be treated as suspicious. Attackers may impersonate wallet providers or support staff to pressure you into clicking a link or revealing your recovery words.
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- Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
- Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
- Enjoy Bluetooth connectivity, iOS access, and hours of battery use with this mobile-first, secure backup signer. Freedom you can depend on.
- Genuine Check: confirm your signer is authentic during setup with the Ledger Wallet app.
- Protect your signer: keep it in mint condition at all times with a bespoke Pod or Case to avoid scratches and everyday wear and tear.
- Do not use links, attachments, or QR codes in unexpected wallet-related messages.
- Never enter or confirm your recovery phrase in response to a message or support request.
- If you need help, navigate to the wallet provider’s official website yourself and begin a support conversation there.
Ledger and Trezor both publish guidance about scams targeting their users; consult Ledger’s phishing campaign page and Trezor’s scam and phishing guidance rather than trusting an unsolicited contact.
Install wallet software only from official sources
Get wallet applications and updates through the provider’s official channels. Ledger identifies its own website as the official location for downloading Ledger Wallet. Avoid search ads, unsolicited messages, and unofficial download pages, which can lead you to software designed to steal credentials or recovery information. Trezor’s scam guidance also addresses deceptive approaches affecting its users.
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Review what you are signing
Before approving a transaction, check the details presented by your wallet signer and confirm that the action matches what you intend. If the destination or requested action is unfamiliar, do not approve it until you understand it. A device that asks for user confirmation supports consent as a security objective, but that does not mean every transaction is automatically easy to interpret or that a device can judge your intent for you. Ledger describes these objectives in its threat model and developer documentation.
What a hardware signer can—and cannot—do
A hardware signer can reduce the exposure of cryptographic secrets to an internet-connected computer by isolating those secrets from a potentially insecure host. Ledger’s developer documentation describes this key-isolation role. That can be useful if you want your keys kept apart from a computer used to access the internet.
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- Connectivity: USB-C cable connection only. No Bluetooth.Compatible with the Ledger Wallet crypto app, both desktop (Windows, macOS, Linux) and mobile (Android only). Not compatible with iOS.
- Protect your digital assets with the industry's best security: keep your private keys offline in your private signer, battle-tested by the Donjon's white hat hackers, CC EAL 6+ certified Secure Element, constantly updated Ledger OS.
- Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
It is not a cure-all. You still need to keep the recovery phrase secret, obtain software through official channels, resist impersonation, and make careful decisions about transaction approvals. Vendor security materials discuss physical and logical threats, but they do not establish that a wallet device is unhackable or that revealing a recovery phrase is safe. See Trezor’s overview of wallet threats and Ledger’s discussion of hardware-wallet attacks.
If you are considering a cryptocurrency hardware wallet, compare how it isolates keys, presents and confirms user intent, and supports device genuineness checks and firmware updates. Also consider the backup and recovery responsibilities and whether you can use the device and recover the wallet safely. The cited vendor materials describe their own designs and threat models; they are not independent comparative tests, and they do not establish a best model.
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What wallet-security incident research can—and cannot—tell you
A 2023 paper, “SoK: Design, Vulnerabilities, and Security Measures of Cryptocurrency Wallets,” reports that its authors identified 84 wallet-security incidents from 2012 through 2024, accounting for $5.4 billion. This is the scope and result described in the paper’s abstract—not an annual loss figure, a current 2026 estimate, or a complete count of every wallet attack. Read the paper’s abstract on arXiv.
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