It’s been 2 1/2 years since my first book was published, although I’ve been writing and speaking about Network Security Monitoring for at least five years. I’m starting to see other people cite my works, which is neat, but I need to elaborate on some ideas. In many enterprises, the security team does not have access to SNMP data from infrastructure devices. In these situations, security analysts are left analyzing whatever data they can collect independently — hence NSM. NSM is not the be-all, end-all approach to solving enterprise problems.”]
Source: https://taosecurity.blogspot.com/2007/01/comments-on-issa-journal-article.html