At this moment, the management of a network proposes new challenges for communication service providers (CSP). There is no human workforce capable to perform FCAPS (fault, configuration, accounting , performance and security) administration satisfying the exigent service level agreements to customers and keeping the same pace with respect to business. For 5G, one key challenge is the management of the security of network slices. The objective is to provide a review of Artificial Intelligence techniques applied to security in networking as well as a focus on the security challenges in network slicing, paying attention on how AI would help to solve the associated security issues for this enabling technology for 5G.