Marcus Ranum: Web 2.0 layers are going to cause their share of problems, but those problems are nothing new. Not knowing what’s on your network is going to continue to be the biggest problem for most security practitioners. The bad guys continue to professionalize, he says, and the grey area between “black hats” and “white hats” is gone. The real best practices have been the same since the 1970s: know where your data is, who has access to what, read your logs, guard your perimeter, minimize complexity.”]
Source: https://www.csoonline.com/article/2123376/marcus-ranum-on-network-security.html