Taking a bold stand against the mainstream wisdom, Valeriano and Maness argue that there is very little evidence that cyber war is, or is likely to become, a serious threat. Their claim is empirically grounded, involving a careful analysis of cyber incidents and disputes experienced by international states since 2001, and an examination of the processes leading to cyber conflict.

As the authors convincingly show, cyber incidents are a little-used tactic, with low-level intensity and few to no long-term effects. As well, cyber incidents are motivated by the same dynamics that prompt regional conflicts. Based on this evidence, Valeriano and Maness lay out a set of policy recommendations for proper defense against cyber threats that is built on restraint and regionalism.