Picus Research Reveals Gaps in Post-Compromise Cyber Defense Effectiveness

• •Perimeter defenses improved to 69%, but only 37% of post-compromise actions are blocked.
• •Organizations logged 58% of simulated attacks, generating alerts for only 14%.
• •Gaps in defense are most pronounced against low-noise activities, requiring urgent attention.

Picus Security's Blue Report 2026 shows that while perimeter defenses have improved to 69%, only 37% of actions by attackers post-compromise are blocked. The study analyzed over 338 million attack simulations conducted in production environments from January to June 2026. It highlights a significant gap in defense against low-noise activities, with only about 10% of such actions being thwarted. Organizations logged 58% of simulated attacks but generated alerts for just 14%. The report emphasizes the need for continuous testing of security controls and improving detection capabilities. Security teams are advised to prioritize validating complete attack paths and strengthen behavioral detection methods. The findings indicate a critical need for organizations to adapt their defenses to counteract quiet post-compromise activities effectively.