# GitLab Duo Security Review Catches Logic Flaws Scanners Miss Detect security vulnerabilities traditional scanners overlook. - **Source:** [GitLab](https://brifing.si/source/76101668-80db-4240-8676-e968d2b72546) - **Published:** 2026-07-16 - **Topic:** [Software & Engineering](https://brifing.si/c/engineering) - **Original article:** - **On Brifing:** https://brifing.si/s/1a348a0e-f307-4748-945b-6c31f18e99a6 ## The Gap in Traditional Scanners Static security scanners excel at detecting known vulnerability patterns but fail to catch flaws in application logic. These flaws often surface late, increasing remediation costs. GitLab Duo Security Review aims to bridge this gap with AI-powered analysis. ## Why Logic Flaws Are Dangerous Code may appear correct line by line but violate context like authorization models or workflows. Issues like unauthorized data access or sensitive data leaks often go unnoticed by traditional scanners, posing significant risks. ## How GitLab Duo Works Security Review Flow analyzes code changes like a security engineer, focusing on intent rather than signature matching. It operates at the Merge Request (MR) stage, catching logic flaws before they reach production. ## What It Detects GitLab Duo identifies common vulnerabilities such as authorization errors, data exposure, business logic flaws, and race conditions. Each finding includes a description, suggested fix, and severity level for actionable insights. ## Ease of Use Users can submit MRs to Duo Security Review and view results in the diff interface. Findings undergo an additional validation step to minimize false positives. Final decisions always remain with human reviewers. ## Why It Matters GitLab Duo closes the gap between development speed and security review. By analyzing code changes early, it reduces remediation costs and enhances proactive security, making it a vital tool for modern development teams. ## Sources covering this story - https://about.gitlab.com/blog/gitlab-duo-security-review-flow/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._