The promise of automated pentesting is undeniable: a tool that can identify vulnerabilities and potential attack paths, all with the click of a button. But as the saying goes, the devil is in the details. While automated pentesting can provide a comprehensive overview of your system's security posture, it's crucial to recognize its limitations and the potential gaps it leaves behind.
The Limitations of Automated Pentesting
In my opinion, the primary issue with automated pentesting is that it often provides a false sense of security. When a tool identifies a potential attack path, it doesn't necessarily mean that your existing controls and detections would have caught an actual attacker. It's like finding a crack in your wall; it doesn't guarantee that a burglar would use it to enter your home.
For instance, a tool might prove that credential dumping or lateral movement is possible. But that doesn't tell you whether your Endpoint Detection and Response (EDR) system would have blocked the attack or whether your Security Information and Event Management (SIEM) system would have logged it. It simply proves that a path exists, not that it's defended.
The Importance of Control Validation
This is where control validation comes into play. Control validation asks whether a control reacts to a known behavior: blocked, detected, logged, or missed. It's about understanding how your existing security controls would perform in a real-world scenario. If a tool proves a path exists but your controls already block or detect it, that finding may not carry the same urgency as one that works silently.
The Webinar: Closing the Gap
The Hacker News webinar with Picus Security aims to bridge this gap. Autumn Stambaugh, Can Yüceel, and host James Azar will explore how automated pentesting fits into the broader validation program. They'll discuss the six surfaces of validation, with automated pentesting focusing on the attack path: whether an attacker can move through an environment.
The webinar will also delve into the practical problem of prioritization. If a tool proves a path exists but your controls already block or detect it, that finding may not be as urgent as one that works silently. Without control validation, teams rank risk with half the evidence missing.
The Takeaway
In my view, the key takeaway from this webinar is the importance of control validation. It's not enough to rely solely on automated pentesting. You need to validate your controls to ensure that they're actually catching the behaviors you want to prevent. By doing so, you can close the gap between a reachable path and a defended one, and truly secure your environment.
