Replit and Semgrep – Real-time security scanning in the browser

Show HN: Replit and Semgrep – Real-time security scanning in the browser

Replit and Semgrep – Real-time security scanning in the browser operates in show hn launch based in San Francisco, California, US, founded in 2017.

Profile

Heya HN, excited to show off what I've been privately calling an AI cybersecurity tool built by AI skeptics. Two years ago we started a series of experiments with this philosophy of identifying small pieces of cognitive work where a human can very clearly map out the input data they need and the algorithm they'd follow to make a decision. This idea came partly out of frustration with the zeitgeist involving throwing broad AI features (e.g. useless chat bots) into products that end up unreliable and are targeting no clear problem a user might actually have. It feels kind of like a machete vs. scalpel approach.For one, Semgrep (without AI) emits a stream of possible vulnerabilities found via s

The company sits in the show hn launch segment, where it competes on its core product or service.

The business is associated with San Francisco, California, US.

It is recorded at the Show HN launch stage.

Recorded headcount: 51-200 employees.

Website: semgrep.dev/blog/2025/replit-and-semgrep-secure-vibe-coding