338 Million Attack Simulations Expose Enterprise Cybersecurity Gaps

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Organizational security measures have shown improvement, but critical vulnerabilities persist in internal defenses.

Key Findings from the Blue Report 2026

The Blue Report 2026 by Picus Labs highlights a significant disparity between perimeter and internal security effectiveness. While enterprises are better equipped to repel overt attacks, they remain vulnerable to stealthy, low-profile threats that exploit gaps in internal monitoring and response capabilities.

Post-Compromise Detection Rates

Once an adversary breaches outer layers, the success rate of their actions increases dramatically. Post-compromise, only 37% of attacker activities are intercepted, indicating a severe weakness in internal detection mechanisms.

Traditional Security Tools and Limitations

Traditional security tools excel at identifying high-impact actions such as lateral movement and privilege escalation, which are blocked 85-90% of the time. However, reconnaissance activities—such as mapping network structures, enumerating shared resources, and extracting credentials from memory—are detected at alarmingly low rates.

“The report emphasizes the importance of behavioral analysis over indicator-of-compromise (IOC)-based approaches.”

Credential Harvesting and Detection Gaps

Credential harvesting, for instance, is only identified 10% of the time during reconnaissance and 22% when reading credentials from memory. This suggests that attackers can operate undetected for extended periods, gathering intelligence and credentials before initiating more visible actions.

Mimikatz Case Study

A key case study involves the use of Mimikatz, a credential theft tool. Simulations demonstrated that its effectiveness varies significantly based on execution methods. When using the classic LSASS memory dump technique, which is well-documented and signature-based, the tool was blocked 94% of the time. However, alternative methods—such as extracting credentials from other memory locations or the local registry—were detected at just 17% and 3% respectively.

Behavioral Analysis vs. IOC-Based Detection

The report advocates for behavioral analysis over indicator-of-compromise (IOC)-based approaches. While IOC testing measures whether security systems recognize known malicious content, behavioral testing evaluates whether controls can prevent the underlying actions, regardless of the method used.

Log Generation and Alert Disparity

The analysis also highlights the limitations of CVSS-based vulnerability prioritization. Common exploit techniques continue to succeed across multiple CVEs, demonstrating that severity scores alone do not reflect real-world risk. The report attributes this to a reliance on outdated detection strategies that prioritize data volume over precision.

Continuous Validation and Proactive Security

The findings underscore the need for continuous validation of security controls. The report warns that strong performance metrics are often temporary, as adversaries adapt to known defenses. Organizations must test their systems against the full spectrum of attacker behaviors, not just well-documented threats.

The Blue Report 2026 serves as a benchmark for enterprise security programs, offering insights into the tactics and techniques that are most frequently blocked and those that remain unaddressed. It also provides actionable guidance for improving detection and response capabilities, from perimeter defenses to internal monitoring.