Trezor: keys, security, fees and reviews
Hardware wallet
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Key facts
- Wallet type
- Hardware wallet
- Who holds the keys
- the user (self-custody)
- Developer
- Trezor Company s.r.o.
- Platforms
- hardware device, desktop, iOS
- Open source
- yes
- Official site
- trezor.io
Checked on 2026-10-27 against the official site, docs and app-store pages.
What is Trezor
Trezor is a line of hardware wallets made by Trezor Company s.r.o. of Prague, part of SatoshiLabs Group, which created the first hardware crypto wallet, the Trezor Model One, in 2013. Current models are the Trezor Safe 3, Safe 5 and Safe 7, used with the Trezor Suite app on desktop and mobile or with 30+ third-party wallet apps.
Who holds the keys
| Parameter | Details |
|---|---|
| Key control | Self-custodial: private keys are generated on the Trezor device and held only by the owner. |
| Key storage | Keys stay offline on the device; every transaction is checked and confirmed on the device screen. |
| Seed phrase | 12-, 20- or 24-word wallet backup; Multi-share Backup (several shares) is available on newer models. |
| Recovery | If the device is lost, the backup restores the wallet on any Trezor. |
Features and supported networks
| Parameter | Details |
|---|---|
| Platforms | Trezor Suite app for Windows, macOS, Linux and Android; full iOS support with Safe 7, limited iOS support for Safe 3 and Safe 5. |
| Supported networks | Thousands of coins and tokens on networks such as Bitcoin, Ethereum, Solana, Base and Arbitrum One. |
| Swaps | Buy, sell and swap inside Trezor Suite through compared third-party providers. |
| Staking | Staking for Ethereum, Cardano and Solana in Trezor Suite. |
| dApp browser | Connects to dApps via WalletConnect and to 30+ wallet apps such as MetaMask and Rabby. |
| Secure element | All three models use an EAL6+ certified Secure Element; Safe 7 adds the auditable TROPIC01 chip alongside the Optiga element. |
| Display | Safe 7: 2.5" colour touchscreen; Safe 5: 1.54" colour touchscreen; Safe 3: 0.96" monochrome screen with two buttons. |
| Connectivity | USB-C on all models; Safe 7 also has Bluetooth and Qi2 wireless charging. |
| Privacy (CoinJoin, Tor) | Passphrase protection, Tor connection and coin control. |
Security and audits
- Firmware is open source on GitHub under the GPL-3.0 licence.
- Secure Elements are EAL6+ certified; the Safe 7 adds TROPIC01, which Trezor describes as the first auditable secure element.
- Public bug bounty with rewards up to $100,000 for critical issues, with no upper limit in exceptional cases.
- PIN up to 50 digits and optional passphrase on all current models.
Fees
| Parameter | Details |
|---|---|
| Wallet | Trezor Suite app is included with the device; buy, sell and swap go through third-party providers with their own fees. |
History
| Date | Event |
|---|---|
| 2013 | Trezor Model One, the first hardware crypto wallet, created. |
Risks and caveats
- The wallet backup is the only way to restore funds if the device is lost or broken.
- Buying, selling and swapping in Trezor Suite are provided by third parties.
- Not every coin is supported on every device or in Trezor Suite; some need third-party wallet apps.
About the developer
- Legal entity
- Trezor Company s.r.o., company ID 02440032.
- Headquarters
- Kundratka 2359/17a, Prague 8, Czech Republic.
- Parent company
- SatoshiLabs Group.
- Founded
- 2013 (first device); self-funded with no outside investors.
Official links
- Website: trezor.io
- Download: trezor.io/trezor-suite
- Source code: github.com/trezor/trezor-firmware
- Security: trezor.io/security
- Docs: trezor.io/coins
Questions and answers
Is Trezor self-custodial?
Yes. Private keys are generated on the device and held only by the owner; the wallet backup restores them on any Trezor.
Is Trezor open source?
Yes. The firmware is published on GitHub under the GPL-3.0 licence.
Which coins does Trezor support?
Thousands of coins and tokens on networks such as Bitcoin, Ethereum, Solana, Base and Arbitrum One, with a few exceptions per device.
Is Trezor safe?
Current models use EAL6+ certified Secure Elements, PIN and passphrase protection, and Trezor runs a public bug bounty.
Who makes Trezor?
Trezor Company s.r.o. of Prague, Czech Republic, part of SatoshiLabs Group.
Sources
- trezor.io
- apps.apple.com
- Trezor — Compare wallets
- Trezor — Trezor Safe 7
- Trezor — Trezor Safe 5
- Trezor — Trezor Safe 3
- Trezor — Trezor Suite app
- Trezor — Security portal and bug bounty
- Trezor — Terms of Use and contact
- GitHub — trezor/trezor-firmware
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