Terrorism in its various and constantly evolving forms is a sad fact of modern-day life. In response, governments around the world have adopted security strategies that endeavour to minimise the risks posed to their citizens, strategies that seemingly move in only one direction, becoming ever-more restrictive. Private companies play a critical role in these efforts. Airlines are required to provide passenger data, estate agents must report suspicious transactions, and banks are expected to act as guardians of the nation’s financial borders.