Shielded transactions do not mean zero visibility. They mean you have to look in different places.
Cross-chain flows. Bridge activity. Wallet behavior before execution. Liquidity signals.
The threat signals sit outside the shielded perimeter. Most teams miss them.
Ironwood introduced quantum recoverable shielded notes to Zcash.
ZIP 2005 reserves 0x0A (decimal 10) as a pseudorandom function domain separator.
A small cryptographic detail in a much larger effort to future proof against possible quantum threats.