A cyber attack is any attempt to gain unauthorised access to a computer, computing system or computer network with the intent to cause damage. Cyber attacks aim to disable, disrupt, destroy or control computer systems or to alter, block, delete, manipulate or steal the data held within these systems. Even if small businesses don't currently have the resources to bring in an outside expert to test their computer systems and make security recommendations, there are simple, economical steps a business can take to reduce the risk of falling victim to a costly cyber attack. This clear and comprehensive book provides detailed guidance intended to assist small to medium enterprises.