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When Every Minute Counts: Fighting Advanced Threats With Real-Time SIEM
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GonzSTL
GonzSTL,
User Rank: Ninja
11/21/2014 | 2:47:35 PM
Re: SIEM Data Correlation
It is a foregone conclusion that proper sizing, configuration, and correlation rules must be in place for the SIEM to be effective. In addition, the security staff must also know how to use the SIEM and have a properly structured incident response plan in place. The growing complexity of internal networks with increasingly heterogeneous systems demands automation for speedier responses to threats. Unless human operators have slot machine eyeballs, it is hard to beat machine speed and efficiency.
RyanAllphin
RyanAllphin,
User Rank: Apprentice
11/21/2014 | 12:29:05 PM
Re: SIEM Data Correlation

I'm glad you've seen the true impact of automated correlations by the SIEM. We see this as one of the most potent tools for uncloaking increasingly subtle attacks.  In particular, rule-less correlation can give you ways to detect threats as they develop based on what is important to your business. Factors such as alerts from a particular service or application, a group of users, or specific types of data can feed into traditional rules-based correlation for the greatest sensitivity to evolving risk – in real or near real time.

RyanSepe
RyanSepe,
User Rank: Ninja
11/20/2014 | 8:33:55 AM
SIEM Data Correlation
I believe the below line is very pertinent.

"Some of this data is available via sensors and tools that are deployed today but are not communicating with the SIEM for evaluation. If organizations can begin to collect this data and process it in real time, they can shift the detection time from days and weeks to minutes."

I have seen organizations that have all the proper tools in place but are not leveraging a SIEM tool. In a lot of those cases the organization has the SIEM tool but instead are relying entirely on their security staff to correlate events. In these cases, I think the best advice is not to reinvent the wheel. Do the work up front to have your SIEM do the heavy lifting for event correlation. From this have your security team analyze the events. 


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