With each of these breaches, we're approaching a point where all coins will be considered tainted. When that happens do we jump into a different crypto-currenc

With each of these breaches, we're approaching a point where all coins will be considered tainted. When that happens do we jump into a different crypto-currency? It's also interesting that stolen coins are really hard to spend - more analysis seems possible as law enforcement learns how these systems work. What if a criminal shorted a coin, breached the system causing a giant loss and then profited from the short sell (and never touched the stolen coins?)