Bip39 Ethereum Default amount of iterations used in wallets is 2048. Increasing this amount really should allow it to be more secure towards brute pressure attacks, having said that you will need to store this value. To obtain your wallet with personalized PBKDF2 you need to use this script (or https://bookmarksden.com/story18702741/bip-39-seed-words-the-best-side-of-bip39