The Trezor Safe 5 represents Trezor growing out of a long-standing criticism. For years Trezor's calling card was radical openness — fully open-source firmware you could inspect line by line — paired with an uncomfortable weakness: no secure element. The Safe 5 keeps the openness and adds an Infineon Optiga Trust M, a chip certified to Common Criteria EAL6+, chosen specifically because Infineon allows public review of it without an NDA. Wrap that in a bright 1.54-inch color touchscreen with haptic feedback and you get the most refined Trezor to date, at an official price of $129.
To understand why the secure element matters, look at the attacks it answers. In 2019 Ledger's Donjon lab demonstrated an unfixable seed-extraction attack on the Trezor One and Model T, pulling the seed in minutes with about $100 of gear, because the secret lived on a general-purpose microcontroller. In early 2020 Kraken Security Labs showed a voltage-glitching variant needing roughly 15 minutes and $75 of hardware. Both required physical possession, and a strong passphrase mitigated them, but they were real and unpatchable by design. The Safe line exists to close that hole.
It largely does. The secret material is now guarded by the Optiga secure element rather than a bare MCU, which defeats those cheap glitching attacks. The honest caveat is that the secure element itself runs closed Infineon firmware — Trezor gives you open documentation and the right to review, not open silicon. And the fix is not a magic shield: in March 2025 Ledger Donjon showed you can still glitch the microcontroller on the related Safe 3, which underlines the point that it is the secure element, not the MCU, doing the protecting. This is a more layered, more honest security story than before, not an absolute one.
The everyday experience is the best Trezor has offered. The color touchscreen makes PIN and passphrase entry and address confirmation far nicer than the old two-button devices, though independent reviewers note the touch PIN can take a couple of tries and a stylus helps. Trezor Suite is mature and privacy-respecting, supports Shamir Backup for splitting your seed into multiple shares, and handles thousands of assets. The rough edges are on mobile — iOS is limited to viewing, receiving and buying, with no send or initial setup — and a few assets like Solana SPL tokens are not fully managed in Suite.
The biggest strategic caveat is internal: the Safe 5 is no longer the flagship. In October 2025 Trezor launched the Safe 7, built around Tropic Square's TROPIC01, marketed as the first transparent, auditable secure element — the thing open-source purists always wanted. That does not make the Safe 5 bad; it makes it the value model beneath a more ideologically pure sibling. (Even the Safe 7 is not invincible: in mid-2026 a laser fault-injection flaw was disclosed in TROPIC01, though keys aren't stored on that chip so funds were unaffected.)
Overall the Safe 5 earns a strong recommendation with clear eyes. It is open where it counts, hardened where it used to be soft, and pleasant to use, at a fair price. If you specifically want the most auditable hardware available, budget for the Safe 7; if you want an excellent open-source wallet and don't need to own the very top of the range, the Safe 5 is one of the easiest devices in this roundup to recommend.