That's no surprise for those of us following the SIEM and security analytics markets closely—Gartner placed all three of these vendors in the leaders quadrant of the 2015 SIEM Magic Quadrant report, and LogRhythm and Splunk have made significant inroads in the market as of late. LogRhythm was singled out as "optimal for organizations that require balanced SIEM capabilities combined with endpoint and network monitoring to support security operations and compliance use cases," while Gartner notes that Spunk has earned "high visibility on SIEM shortlists" with the Splunk App for Enterprise Security. For their part, IBM has maintained its position as a leader of the pack in the SIEM market, even while smaller, more agile companies nip at its heels. IBM's QRadar solution earned Gartner's praise for its ability to "support a wide set of threat management and compliance use cases for modest as well as large-scale deployments.