Enforcement & Containment with Segmentation
In an "Assumption of Breach" world, we accept that it's statistically impossible to keep all the bad guys out. That inevitably at some point, we will receive that phone call or email that says it's happened to our organization. But that doesn’t mean we are powerless against it either. We have the tools and practices to help limit the impact that such an incident can have on our business, we just have to exercise them. Segmentation is one of those practices that has the ability to significantly impact your overall security posture, but it's impact depends on how well it's implemented. The industry has been using VLANs for segmentation for decades, but they are combat ineffective when it comes to stopping the spread of ransomware and other malicious threats.