Debates over the best ways to safeguard digital assets often intensify when key industrt voices weigh in. Recently, well-known blockchain investigator ZachXBT sparked widespread discussion by sharply criticizing dedicated hardware devices, labeling them unreliable for serious use in storing funds or approving transfers.
His comments, shared via Telegram, suggested that current market options fall short in both protection and practicality, particularly for handling substantial holdings.
Trezor, a manufacturer in the hardware wallet space, quickly pushed back through its Chief Commercial Officer, Danny Sanders.
In an interview, Sanders acknowledged frustrations with occasional software glitches and the challenges of balancing robust security with smooth user experiences.
He conceded that frequent updates can sometimes disrupt basic functions, a pain point that resonates with many in the community.
However, he firmly rejected blanket dismissals of the entire category as ineffective.
Sanders emphasized that hardware wallets offer distinct advantages for the majority of users.
Love ZachXBT's detective work, but of course I kindly disagree here 🙃.
A dedicated iPhone is an interesting hot wallet upgrade, but it's still a general-purpose device. And assuming everyone can execute this setup really well is a big generalisation.
Why an iPhone can't… https://t.co/Qtp1y15krY
— Danny @Trezor (@Dantoshi) July 16, 2026
Unlike general-purpose smartphones, these specialized devices operate with isolated environments that minimize exposure to common threats.
They feature dedicated screens for independently verifying transaction details before confirmation, helping prevent malware from subtly altering payment information.
Private key generation also occurs in a more controlled setting, reducing risks compared to mobile setups that rely on Wi-Fi, Bluetooth, cellular connections, and messaging apps—all of which expand potential vulnerabilities.
While recognizing that advanced users managing high-value portfolios may benefit from customized, multi-layered approaches, Sanders argued against applying elite-level tactics universally.
He stressed that for everyday crypto enthusiasts, dedicated hardware remains one of the most effective self-custody tools available today. The core philosophy centers on keeping keys offline and under user control, far removed from exchange or third-party risks.
The exchange highlights broader tensions in crypto custody. ZachXBT proposed using a dedicated iPhone stripped of other apps as a signing device for experienced individuals, aiming for greater control and fewer intermediaries.
Trezor countered that this introduces unnecessary complexities and attack vectors inherent to connected consumer devices.
Supporting this view in part, Tornado Cash co-founder Roman Storm highlighted ongoing needs for improvements like broader BIP39 passphrase support and air-gapped signing options in mobile wallets to enhance overall security.
This discussion arrives amid a maturing market where self-custody adoption grows alongside rising threats.
Hardware solutions have protected millions of users by design, emphasizing open-source transparency and verifiable processes.
Yet, no tool is foolproof—human error, social engineering, and supply-chain issues continue to pose challenges across the board.
Trezor and similar providers continue investing in usability enhancements while upholding security fundamentals.
The conversation underscores a key principle in cryptocurrency: security is multifaceted, combining technology, user habits, and informed choices. While critics like ZachXBT push for alternatives tailored to power users, companies like Trezor advocate for accessible, dedicated hardware as a reliable foundation for most holders seeking true ownership of their assets.