When US crypto regulators cracked down on Tornado Cash in 2022, the assumption was simple: shut down the tool, shut down the problem. It didn’t work out that way. Related Reading: Is Bitcoin The Poor Man’s Hedge Against Inflation? Coinbase CEO Thinks So New research from the Cambridge Centre for Alternative Finance (CCAF) shows that coin mixer usage has climbed back toward pre-ban levels — and that the people most effectively pushed out by the sanctions were not the criminals, but ordinary users seeking financial privacy.