The new Trezor Safe 5 is equipped with a Secure Element. But what exactly is it? What is it for? And above all: is it really useful to protect your cryptocurrencies?
What is a Secure Element (SE)?
A Secure Element is a specialized chip, designed to store and manipulate ultra sensitive data (such as your Seed Phrase) in an environment completely isolated from the rest of the system.
It works a bit like a hardware fortress integrated into your wallet .
It is certified according to very strict safety standards, here EAL6+, one of the highest also used in passports, bank cards, SIM cards, etc.
What is the Element Secure for the user for?
It protects your seed sentence (the recovery sentence of your wallet) even if someone physically puts their hands on the device.
It makes it extremely difficult to extract data via so -called "physical" attacks: electron microscopy, laser fault injection, attack by electrical consumption analysis, etc.
He adds a hardware barrier against attacks aimed at the hardware, in addition to software protections.
In summary: Without Secure Element, a highly qualified and well -equipped pirate could theoretically extract your private key if your device is in its possession long. With an element secure, it becomes almost impossible.
And for an attacker, what does it change?
With a Secure Element, the attacker cannot directly access sensitive memory. Reading or intrusion attempts often cause automatic data erasure.
The cost, time and complexity of an attack increases considerably. We go from a realistic risk to an almost zero risk for 99.9 % of users.
In what cases is an element secure really useful?
If you often transport your wallet (trips, travel, coworking, etc.).
If you leave your wallet in a place not completely secure (locker, shared office, etc.).
If you fear a physical flight from your device.
If you evolve in a high -risk environment (activism, crypto company, offensive security, etc.).
On the other hand, if your wallet remains safe in your home, in a trunk for example, the Secure Element is not essential. But it constitutes an additional safety layer.