High‑schooler releases LLM‑driven tool that claims 60+ bugs in Linux, V8 and other open‑source projects

Ruikai Peng posted a preview of Rolling in the Diffs, an LLM‑based vulnerability‑discovery system he says uncovered over 60 flaws while still in high school.

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Primary source: X

Why it matters

The preview shows how a high‑school developer can use LLM APIs to find dozens of bugs in major open‑source software, highlighting both the promise and the verification challenges of AI‑driven security research.

Illustration of high-schooler Ruikai Peng presenting Rolling in the Diffs with code and bug icons over Linux and V8 logos, highlighting the tool's claim of 60+ discovered flaws.

On July 22nd, 2026, Ruikai Peng (@ruikai) posted a two‑part thread on X announcing a preview of Rolling in the Diffs, an LLM‑based "epistemology system" he has built to surface software vulnerabilities. Peng \*claims the system has already discovered more than 60 bugs across a range of high‑profile open‑source components, including the Linux kernel, the V8 JavaScript engine, WebKit, FFmpeg, Firefox, PostgreSQL and Redis.…

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