IntroductionThe BIP39 standard plays a crucial role in cryptocurrency wallets by generating mnemonic seed phrases that provide access to user funds. While considered secure by design, BIP39 may suffer from statistical weaknesses in its real-world implementation. This article highlights a critical flaw: certain 12- and 24-word seed phrases can be guessed using probabilistic models and dictionary-based approaches, significantly reducing the entropy expected in these phrases. If exploited at sca...