When I hear people praise proactive measures they’re usually talking about “stopping attacks” Sometimes so-called proactive measures arethan reactive or passive ones. Kelly Jackson Higgins’ latest article Grab Fingerprint, Then Attack provides an example. Properly configured and used it can act as a sort of intrusion detection system as well. In aggregate security has beenby a “reactive” device. All it does is record what it sees. It doesn’t stop anything. It’s so quiet– including the intruder.”]
Source: https://taosecurity.blogspot.com/2007/03/proactive-vs-reactive-security.html