It’s an area of expertise that is becoming increasingly critical as companies combat the threat of cyber attacks potentially compromising the confidentiality of information they store and process. Specifically, network security involves policing the network perimeter; establishing multi-layered boundary defences with firewalls and proxies between the external network and the trusted internal network of the website or ISP; and protecting internal internet protocol (IP) addresses and providing real time security intelligence. Cybercrime more than doubled last year and has almost quadrupled since 2011, according research from Deloitte, which helps explain the growing demand for Accumuli’s services. It’s also a major reason why I recommended buying the shares at 23p a few months ago ('Profit from cyber warfare', 23 April 2014).