Introducing Devin Security Swarm (3 minute read)

# Thread by @cognition on Thread Reader App Source: [https://threadreaderapp.com/thread/2072368168182432109.html](https://threadreaderapp.com/thread/2072368168182432109.html) Introducing Devin Security Swarm A more cost effective and accurate way to find security vulnerabilities in complex codebases, based on a new architecture: Agentic MapReduce\.  In testing, Devin Security Swarm found 36 of 50 real\-world GHSA vulnerabilities at 30% lower cost per finding than the next most accurate alternative\.[](https://pbs.twimg.com/media/HMKFY9QXEAESi4L.jpg) We built a new architecture for whole\-codebase reasoning that we’re calling Agentic MapReduce\. Security scanning is different from most coding tasks: a report is only trustworthy if the whole codebase is considered\. But most agentic systems struggle to scale reasoning across large repos\. Devin maps relevant signals across the repo, fans out focused agents over bounded shards, reduces their findings into one report, then verifies serious vulnerabilities in isolated sandboxes before marking them confirmed\. The result is simultaneously more efficient and more accurate than other tools\. We evaluated a variety of security scanning tools on a dataset of 50 GHSA vulnerabilities across 14 languages including Go, Rust, Python, Ruby, Java, C\#, JavaScript, C, Swift, Dart, and Elixir\. The dataset spans opens source repos of various sizes and of many software categories\. Beyond excelling on our eval, Devin Security Swarm also found critical vulnerabilities that other tools missed, like a PHP sandbox bypass via template injection, an argument injection through metadata value parsing, and an overly broad deserialization surface\. Security Swarm is a new pillar of Devin for Security: a suite of tools to help you find vulnerabilities, validate their exploitability at runtime, and ship remediation PRs\. Learn more and try it today at: [devin\.ai/security](http://devin.ai/security) We’re also publishing extensive documentation and technical materials about Agentic MapReduce, including a deep\-dive on our evals\. Read our announcement:[cognition\.com/blog/introduci…](https://cognition.com/blog/introducing-devin-security-swarm) Learn about Agentic MapReduce:[devin\.ai/blog/agentic\-m…](https://devin.ai/blog/agentic-map-reduce) Check out the evals:[devin\.ai/blog/security\-…](https://devin.ai/blog/security-swarm-eval)