A Security Information and Event Management (SIEM) solution is both essential and expensive. With a SIEM, you can capture and analyze security event data to support early detection of attacks and breaches. SIEMs aren't without limitations, though. This whitepaper provides an overview of the SIEMs ability to aggregate data while also recognizing the gaps in logs that can result from unreliable data sources and how Gigamon solutions close these gaps to optimize SIEM effectiveness.