As the consumption of cloud services undeniably will explode, AXA instituted a cloud strategy, based on group wide input and a broad study of attackers’ opportunities (e.g. leaks of cloud credentials). It requires changes in security approach, security event management and a culture shift (with security brought close to devops). He described necessary organizational changes, based on the principle of “you build it, you run it, you secure it!” A cloudification team provides support in this to product teams. He presented a simplified evaluation flow for AWS as an illustration of how things work.
From a security point of view, he listed several key controls with need of extra consideration (IAM, auditing, networking, monitoring and back up), as well as the need to define a minimum technical security baseline (mapped on the 27K framework at AXA).
Obviously, there are still plenty of challenges ahead, with in particular the need to acquire additional overall cloud expertise (e.g. regarding incident handling). This includes the need for good management of multiple clouds. Also, companies must find a balance between speed and control, preventing projects to continue too far without considering security aspects. And important, one must strongly object to exceptions being made.
Finally, Mathias Claes listed several helpful resources by Enisa, the Cloud Security Alliance, Azure (e.g. Azure Security Compass) and AWS.
