"Security Information and Event Management (SIEM) systems act as the primary tools for detecting suspicious activity in enterprise networks, helping organizations identify and respond to potential attacks in real time. However, the new Picus Blue Report 2025, based on over 160 million real-world attack simulations, revealed that organizations are only detecting 1 out of 7 simulated attacks, showing a critical gap in threat detection and response."
"While many organizations believe they're doing everything they can to detect adversary actions, the reality is that a large number of threats are slipping through their defenses unnoticed, leaving their networks far too vulnerable to compromise. This gap in detection creates a false sense of security when attackers have already accessed your sensitive systems, escalated their privileges, or are actively exfiltrating your valuable data."
"For SIEM rules to work effectively, however, they need to analyze a set of reliable and comprehensive logs. The Blue Report 2025 found that one of the most common reasons SIEM rules fail is due to persistent log collection issues. In fact, in 2025, 50% of detection rule failures were linked to problems with log collection. When logs aren't captured properly,"
SIEM systems are detecting a small fraction of attacks, leaving large numbers of threats undetected and networks exposed to compromise. Many attackers gain access, escalate privileges, and exfiltrate data without triggering alerts. SIEM rule effectiveness depends on preconfigured patterns and comprehensive, reliable logs to match events and generate alerts. Persistent log collection failures are a major contributor, accounting for roughly half of detection rule failures. The combination of missed logs and brittle rules produces a false sense of security and sustains significant operational risk for organizations.
Read at The Hacker News
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