A handful of SDN-shown pools even now have an “operator” authorization. Of those, two belong to incredibly previous, now-unused variations of Tornado Cash. The remaining pools both have newer, immutable versions, or were being utilized so small they were possible overlooked in the course of the Might 2020 last update. https://meetov-child.com/how-tornado-cash-enhances-privacy-for-ethereum-and-bnb-transactions/