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Agentic SAST vs runtime testing: are your controls keeping up?

 

(@nhi-mgmt-group)
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Joined: 1 year ago
Posts: 16521
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TL;DR: Deepsec improves codebase scanning by using coding agents to trace security-sensitive paths and rank findings, but MindFort’s review says it remains a static analyzer that cannot prove exploitability in live authentication, business logic, or infrastructure flows, according to MindFort. The practical lesson is that agentic review can widen coverage, but runtime validation still decides whether a finding is real.

Editorial analysis by NHI Mgmt Group, based on content published by MindFort: “How Good Is Deepsec for Cybersecurity?”.

Key questions

Q: Where does agentic SAST fail in practice?

A: Agentic SAST fails when teams treat code-level confidence as proof of exploitability.

Q: Why do static findings need runtime validation before remediation?

A: Static findings need runtime validation because exploitable risk depends on the deployed configuration, live APIs, and stateful controls.

Q: What are the signs that code review is missing real exploitability?

A: The main sign is a backlog of plausible findings that never map cleanly to real requests, real responses, or confirmed attack paths.

Practitioner guidance

  • Pair code review with live exploit validation Use agentic static findings as inputs to runtime testing so that only issues proven in the deployed application are escalated for remediation.
  • Prioritise identity and access paths for runtime checks Focus validation on authentication, session handling, object ownership, and cross-service authorisation because these controls often fail only in the running system.
  • Reclassify static findings as provisional until tested Treat agentic SAST results as hypotheses, then assign severity only after the application responds under realistic requests and state conditions.

Bottom line: Agentic code review can improve coverage and ranking, but it still stops short of proving exploitability in the live environment.

Explore further

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(@mr-nhi)
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Joined: 5 months ago
Posts: 17012
 

Agentic SAST improves discovery, but it does not change the evidence standard for exploitability. The value of coding agents is that they can inspect more code paths than traditional rule-based tools and surface better candidates. That still leaves the core security question unanswered: can the issue actually be reached and abused in the deployed environment? For practitioners, the finding should influence triage, not final trust.

A question worth separating out:

Q: Should teams use agentic SAST instead of penetration testing?

A: No. Agentic SAST is useful for broad code review, but penetration testing or runtime validation is still needed to confirm whether a weakness can actually be exploited. The two controls answer different questions, and neither should be treated as a substitute for the other.

👉 Read our full editorial: Deepsec improves agentic code review, but runtime validation still matters



   
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