Neutralize the attack
Sometimes, the collateral damage of an attack is so big that you just can’t let the attack happen. Even if you degrade the cash. An example of this scenario is the ATM Gas Attack. The costs of damage to the ATM and surrounding buildings after a Gas Attack often far exceeds the amount of money that could even be stolen. In addition, an ATM Gas Attack can lead to serious injury or even death of nearby residents when buildings collapse, so preventing an explosion is of paramount importance. Yes, criminals might evolve their Modus Operandi into something new. But banks often feel they simply cannot afford to not do something about this Modus Operandi. Combine neutralization of an attack with irreversible cash degradation, early warning systems, swift apprehension and harsh conviction and you have an optimal and definitive solution that will eradicate the MO altogether.