Enterprise security systems are currently at a crossroads, balancing strong edge defenses with noticeable weaknesses internally. According to the latest Blue Report 2026 released by Picus Labs, which analyzed over 338 million attack simulations, enterprises are witnessing a promising recovery in their defensive capabilities. However, this improvement is primarily observed at the perimeter, where prevention effectiveness has risen to 69%, a four-year high.
Key Findings: Perimeter Versus Internal Security
While perimeter defenses are robust, the situation inside the network tells a different story. The report highlights a significant drop in effectiveness once attackers breach the outer defenses, with post-compromise prevention rates languishing at just 37%. This discrepancy indicates that internal defenses are particularly vulnerable to stealthy actions, such as reconnaissance and credential theft, which precede major breaches.
Internal security measures often miss quiet, deceptive activities that evade detection. The report details how lateral movement and privilege escalation attempts are largely blocked—up to 90% and 85% respectively. However, reconnaissance efforts are thwarted only 10% of the time, allowing attackers to gather critical information with minimal resistance.
Challenges in Detection and Response
The gap between logging activities and generating actionable alerts is another critical issue. Although logging has reached a four-year peak at 58%, the alert rate remains at a meager 14%. This indicates that while data collection is robust, the translation of this data into meaningful alerts is lacking, posing a detection-engineering challenge.
This year’s report also shows that while some industries improved their security measures significantly, others, like the education sector, have seen a decline. The findings emphasize that continuous validation of security controls is crucial for maintaining effective defenses.
Improving Internal Security Measures
To bridge these gaps, the report suggests several strategies. Organizations should focus on validating actual exposures rather than theoretical vulnerabilities. Additionally, reinforcing the interior against subtle actions by testing activities such as share enumeration and passive credential access is essential. Detection rules should be treated as an engineering task, constantly updated to reflect current behavior and ensure that logs translate into actionable alerts.
These strategies highlight that while enterprises have made strides in edge security, the real challenge lies in overcoming the silent threats within. By understanding and addressing these internal vulnerabilities, organizations can bolster their overall security posture.
For a detailed analysis of these findings and to understand where your organization’s defenses stand, download the full Blue Report 2026. It provides insights into prevention and detection across various industries and regions, helping you identify and address the quiet gaps in your security infrastructure.
