Hack Any Webapp

About the researcher

Alexey Fedorov

Security researcher & engineer

Alexey Fedorov designs and ships self-healing client-side patching systems for single-page web applications, the architecture documented across this site. His work pairs a scheduled, fail-aware server-side patcher with a deliberately dumb, durable MV3 browser extension, so that modifications keep working on the user's own machine as vendors redeploy their bundles on an unknown cadence.

The recurring theme is resilience over cleverness: never binding to volatile minified identifiers, discovering services by behavioral shape, gating every regex on a minimum match count, and reducing the extension's remote-code footprint to an auditable, sub-kilobyte declarative diff. The reusable primitive at the center of it all, the onreset injection trick, runs fetched code in the page realm without extension eval and without inserting a <script> element.

Beyond the research

The patching systems are one thread of a longer pattern. In middle school Alexey took over a failing open-source project and grew it to 50,000 weekly active users. That was the point building stopped being a hobby.

He now runs Headliner Studios, an agency that helps founders, athletes, and creators turn presence into leverage. The product side runs on Next.js, TypeScript, Supabase, and Vercel, with most of the work aimed at agentic AI and browser automation. The shipped Chrome extension and the custom MCP infrastructure both came out of that. This fall he joins the Wolff Center for Entrepreneurship at the University of Houston's Bauer College of Business.

Also worth knowing

Find Alexey

The systems

For contact and more work, see alexey-fedorov.com.

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