Automated Pentesting Stability May Mask Persistent Security Risks, Experts Warn

Automated penetration testing often yields fewer new findings after multiple test cycles, which can misleadingly signal stability to organizational leadership. The Hacker News webinar with Picus Security emphasizes the persistent security risks that remain despite seemingly stable automated pentest results and advocates for closing this detection gap.

What happened

Organizations running automated penetration tests frequently observe a decline in newly identified vulnerabilities after the third or fourth test run. This reduction in findings creates reports that appear stable over time. However, this reported stability may not equate to actual security, as underlying risks often persist unaddressed. This phenomenon was the focus of a recent webinar hosted by The Hacker News in collaboration with Picus Security, which aimed to highlight the dangers of over-reliance on automated pentesting results alone.

Why it matters

The perception of stability in automated pentesting reports can cause security teams and leadership to underestimate ongoing security risks. This misinterpretation often results in decreased pentesting activity and slowed remediation efforts, leaving organizations vulnerable to exploitable issues that remain hidden. Understanding and addressing this discrepancy is crucial for maintaining effective security postures and preventing complacency that adversaries may exploit.

What security teams should do

Security teams should recognize that automated pentesting tools may exhaust obvious vulnerabilities quickly, causing a drop-off in new findings without necessarily reflecting a fully secure environment. To address this, organizations can integrate complementary testing approaches, including manual assessments and threat modeling, to uncover less apparent risks. Continuous validation of security controls and reviewing pentesting methodologies can help ensure evolving threats are effectively detected and mitigated.

Key technical details

Repeated runs of automated penetration tests tend to yield diminishing returns in new findings by the third or fourth iteration, leading to a plateau in reported vulnerabilities. This outcome occurs because automated tools commonly detect the same issues in initial scans, but may lack the capability to discover deeper or novel attack vectors that manual or more advanced techniques might identify. The webinar with Picus Security discussed the importance of recognizing this limitation and advocating for augmented testing strategies.

Affected organizations/products

The observations apply broadly to organizations using automated penetration testing as part of their vulnerability management or security assurance processes. No specific products or vendors were identified as being affected or involved beyond the mention of Picus Security as a webinar co-host.

Source attribution

https://thehackernews.com/2026/06/your-automated-pentest-looks-clean-see.html