Semgrep

Semgrep is arriving at exactly the moment its category becomes existential: as coding assistants like Cursor and Claude Code ship machine-authored code faster than any human can review it, the deterministic, developer-embedded scanner becomes the guardrail the AI era forces every engineering org to install. The company built a commercial AppSec platform — SAST, software composition analysis with reachability, and validated secrets scanning — on top of an open-source engine already trusted by developers, giving it distribution and community gravity legacy SAST vendors (Checkmarx, Veracode, Fortify) never had. The $100M Series D led by Menlo Ventures in February 2025 (roughly $204M raised) capitalized a hard pivot into AI-native code security, and the product roadmap has kept pace: Semgrep Guardian scans and fixes AI-generated code the instant it is written in the IDE, Semgrep Multimodal (March 2026) fuses LLM reasoning with rule-based analysis to claim up to 8x more true positives at half the noise of foundation models alone, and Semgrep is an official partner of both Cursor and Claude Code. A Palo Alto Networks partnership folding Semgrep into the Cortex Cloud application-security stack gives it enterprise reach without ceding the developer workflow. Speed, low false positives, and rule customizability are the exact attributes that win developer adoption, and Semgrep owns all three at the layer where AI-written code enters the codebase.