Bip39 online wallet https://www.gamespot.com/profile/pothirpeib/ Let us assume It will probably be 10x quicker compared to GFX card above so around 2,4M hashes/s. A normal attacker will individual several this sort of specialised units. For words that only have three letters, there isn't a 4th letter. By way of example Using https://www.empowher.com/user/4550298