Tomas Susanka

CTO @trezor

[Trezor @Trezor]

Earn yield on USDC or USDT on Ethereum without leaving Trezor Suite.

No dApps, no browser extensions, no new accounts.

Powered by Morpho, one of the most stress-tested and audited lending protocols on Ethereum.

Start now with just a few clicks.

[Tomas Susanka @tsusanka]

How close is the quantum threat to crypto, and what do we need to do to prepare?

We shot a quick FAQ answering users' top questions. Perfect background listening if you're doing some chores today!

https://t.co/DGnNUcuBf6

[zooko🛡🦓🦓🦓 ⓩ @zooko]

I'm fascinated with Durov's technique of multi-layered deception. It reminds me of the techniques used by scammers, politicians, and flim-flam artists of all kinds. If you pack half a dozen lies into every message, it becomes impractical for truth-seekers to untangle it. ⤵️

[Tomas Susanka @tsusanka]

I do agree with this but at the same time I just wouldn't underestimate how long it can take to agree on something and execute in a decentralize network such as Bitcoin.

[Coinjoined Chris ⚡ @coinjoined]

"anyone who is worried that quantum is affecting the security of blockchains is wrong" ~@danboneh

[Tomas Susanka @tsusanka]

Blind signing is becoming a thing of the past. What you see is what you sign. Great to be working with @ethereumfndn and the coalition making it happen.

[CoinDesk @CoinDesk]

JUST IN: The Ethereum Foundation unveiled a new “clear signing” standard designed to help users better understand and verify crypto transactions before approving them.

The initiative aims to reduce wallet scams and malicious transaction approvals across the Ethereum ecosystem.

[Danny @Trezor @Dantoshi]

Clear Signing for hardware wallets is a non-negotiable standard.

It is one of our top priorities this year as we collaborate with the @ethereumfndn and our ecosystem partners.

We are executing an aggressive roadmap to ensure that you never have to sign a transaction you don't fully understand. Let’s do this.

[Tomas Susanka @tsusanka]

@n1ckler @blksresearch How do you know which one is the primary device? On a blank computer, you'd scan the blockchain, see your transactions on the SHRINCS key path, but realize you don't have the state -> fallback to SLH-DSA? 🤔

[Bruno @bmartins_]

Good news! Falcon doesn't need a large CPU or even a FPU, and even runs (experimentally) on Trezor HW Wallet!

[Tomas Susanka @tsusanka]

Pretty happy about this. We always try to keep an eye on this and not let it slip

[Ranko X @r4nk0X]

@BinanceWallet @vultisig @Backpack @BitgetWallet @Dashpay @zerion @Ledger @rainbowdotme @tetherwallet @paoloardoino @krakenfx @Trezor Suite (Android) — 97/100
1 IP. 1 domain.

https://t.co/5B8HNo7y6z. 35 packets total.

no firebase, no analytics, no crashlytics, no third parties. one own backend on launch. hardware company shipping a wallet the way ledger should have.

[Craig Gidney @CraigGidney]

Blog post: "The predictable failure of the QDay Prize"

https://t.co/gdyFVSGqZT

[Trezor @Trezor]

We invented the hardware wallet in 2013.

13 years later, Trezor Safe 7 is setting the standard, winning the Red Dot Award for Product Design 2026 & Best Hardware Wallet 2026 from The Block.

Design you can see. Security, you can read.

[conduition @conduition_io]

NIST just announced the first draft of a spec which proposes 3 new smaller SLH-DSA parameter sets, targeting a signature limit of 2^24 instead of 2^64. The smallest has signatures of only 3856 bytes, about the same size as ML-DSA!

https://t.co/01OOLeI2SZ

[Alex Pruden @apruden08]

https://t.co/0qfShFzyfO

[Tomas Susanka @tsusanka]

Haven't seen a paper looking into this yet.

"we estimate that - even after expending the enormous costs to build a CRQC - running it would require about 125 MW of electrical power, and using it to break one public key would cost about $64,000 for electricity alone at current prices. Even if a CRQC is eventually built, merely operating it would probably remain the domain of nation-states and large organizations for a significant period of time."

[Daniel J. Bernstein @hashbreaker]

Corrected numbers (tnx PLDD): https://t.co/6SH3X4jTIZ estimates 2^19 qubits, 1/3 hour, to break an ECC key. https://t.co/N0ER3RhUfd estimates 6 watts/qubit. 2^20 watt-hours costs $100 in electricity + hardware-building cost. More analysis can change numbers in either direction.

[calle @callebtc]

what do both of these scammers have in common?

both offer insecure messaging apps with no encryption by default and use weak cryptography that hasn't been audited.

whatsapp may suck but at least they use state-of-the-art encryption that X and telegram can only larp about.

[Daniel Prince @Princey21M]

Did you know that the Czech people were rugged of their currency's purchasing power in 1953?

Their government did this to them overnight, leaving millions bankrupt.

When the Velvet Revolution took place in 1989, perhaps no other sight or sound stood out more than the widespread jingling of keys.

@matej_zak and @tsusanka join me from @Trezor to discuss the importance of self-custody, Bitcoin, Open-source Chip software and being able to jingle your keys!

Now available Ad-Free to subscribers or to purchase on @fountain_app or https://t.co/zO3B8U9gm5

General release in 24 hours.

https://t.co/QNRVKe2tKz

[_Checkmate 🟠🔑⚡☢️🛢️ @_Checkmatey_]

Also, thank fuck we're talking about something interesting for once. I'll take the quantum debate over spam every block of the ledger.

[VLAD HOSTS THE BEST PODCAST IN BITCOIN @Vladcostea]

Trying the new @Trezor Safe 7 with @tsusanka @matej_zak (Bitcoin Takeover Podcast S16 E57) https://t.co/z2cOvYOGCN