There are a variety of routes whereby a bad actor can gain unauthorised access to an organisation’s systems. They range from telephony solutions, modems, ISDN and DSL, to name a few. These systems are used for various business purposes, including; support for remote and home working by staff, dedicated connections with organisation partners and suppliers, access to public networks (e.g. Internet) and third-party networks.

Most modern software is designed specifically for use in distributed systems. Coordinating various services and applications usually achieves a seamless experience for the end-user in these systems. However, because of the interrelated structure of multiple…