Introduction: The Mystery of the 50 Billion Dollar Disappearance
In February 2025, a heavy blow was dealt to the history of cryptocurrency: the most trusted multi-signature solution in the industry, Safe (Wallet), lost 1.6 billion dollars in a front-end attack. This was not due to some obscure zero-day exploit or a breakthrough in quantum computing, but because of a persistent flaw that has existed since the inception of self-encryption: the weakness of the user interface for key operations.
Since 2020, over 50 billion dollars have vanished from wallets that claimed to be secure. Hacker attacks seem eerily similar: the blockchain has not been breached, cryptography has not been cracked, yet funds mysteriously disappear. The unacceptable truth is: 'secure' wallets are not actually secure - the lock may be strong enough, but we often guard the wrong door.