In under 30 minutes, a systems architect successfully cracked a 12-word seed phrase.
That "one word exposed" constitutes as all your words from being able to see an access your clipboard because most wallets arnt created via airgapping?
Discussion
one word is 11 bits of the code, assume it's not the last one, which is useless checksum, you are trying to tell me someone crunched ... what is it... 2^117 options, optimistic average they needed 2^59 attempts... do i really need to show you what that looks like as a decimal number?
288,230,376,151,711,740
288 quadrillion attempts with a 50% luck factor
that's exa in greek unit notation as in giga peta exa
bitcoin hashrate in the whole world right now, is at 600M terahash so yeah... a million times the current bitcoin hash rate to discover this key is the cost, not gonna happen in less than 100 years
also, just to note, deriving the private key of a public key is a lot more computation than an SHA256 hash - there still isn't ASICs to do this afaik, though i think there is probably work being done, since elliptic curve modular arithmetic is becoming more and more important to security