The battle between fraudsters and the ATM operators is ongoing and apparently never ending. Initial successes with the first generation of anti-skimming devices lead to the growth of “back to basic” techniques which require the minimum technology and organisational support. Now, as new defence mechanisms counter the low-tech, a new wave of high tech devices are coming on stream as well as super hi-tech techniques like malware and system hacking attacks which involve long term investment, detailed technical skill and the organisation to run multi-country operations in a very short space of time.