Enterprise SIEMs Are Detecting only 21 Percent of Threat Techniques

SIEMs Are Drowning in Data—But Still Can’t See the Threats That Matter

CardinalOps’ 2025 report exposes systemic failures in security detection across modern enterprise environmentsIn the high-stakes world of cyber defense, enterprises are stockpiling petabytes of security telemetry—but most of it is going to waste.That’s the core revelation from the newly released Fifth Annual State of SIEM Detection Risk Report by CardinalOps, which calls into question the true efficacy of modern SIEMs (Security Information and E…

Enterprise SIEMs are detecting only 21 percent of threat techniques

Enterprise security information and event management (SIEM) tools miss 79 percent of the MITRE ATT&CK techniques used by adversaries, according to a new report. The study from CardinalOps draws on an expansive dataset of 2.5 million total log sources, over 23,000 distinct log sources, more than 13,000 unique detection rules and hundreds of production SIEM environments, and finds that a significant portion of existing detection rules -- 13 percen…