A Handful of SDN-detailed swimming pools nonetheless have an “operator” authorization. Of these, two belong to extremely outdated, now-unused variations of Tornado Cash. The remaining swimming pools both have newer, immutable versions, or were applied so little they were most likely ignored throughout the May perhaps 2020 remaining update. 0xaf8d1839c3c67cf571aa74B5c12398d4901147B3 https://aftermathsmedia.info/the-role-of-tornado-cash-in-protecting-blockchain-privacy/