Yes, but why ? That the question of my post.
Because the seed phrase (Whether it's BIP39 or an electrum's seed) has enough entropy and you can't brute force that.
Can you access a wallet if you brute-force its seed phrase? Yes.
Can you brute-force a seed phrase without any information about that? No.
Because when I delete my wallet and recreate it from the seed (the 12 words), all the transactions appear as well as all the addresses with funds. That's what scares me.
That's exactly how it should work.
And I do a brute force, and the brute script tells me that the words : word1 word2 word3 are a valid wallet, it's over ?
If you manage to brute-force someone's seed phrase, you can access the fund. But the problem is that you can't brute-force the seed phrase.
What prevents a person from having access to the wallet?
Big entropy of the seed phrase.