Cyber security spending for critical infrastructure totalled US$41.76 billion globally in 2012, according to an ABI Research report.
The study Cyber Security Policy in Critical Infrastructure said the money was spent by nation states, non-governmental organisations, technical bodies, and private sector operators.
The report also pointed out that increased spending over the next five years will be driven by a growing number of policies and procedures in education, training, R&D, awareness programmes, standardisation work, and cooperation among other projects.
Energy, telecoms, healthcare, and transport systems and other critical sectors are making use of Internet connectivity and next generation technologies to boost productivity and improve efficiency. Protecting these networks from cyber threats requires a national approach.