buggy.run
Buggy.run runs automated security audits on web apps, finding data leaks and vulnerabilities with plain-English fixes.
Overview
Buggy.run is an automated web application security auditing platform designed for developers and small teams. It combines a real browser crawler, AI-driven data leak detection, and over 56 security checks to surface vulnerabilities across both public and authenticated pages. The service aims to replace expensive manual penetration tests with a continuous, affordable alternative that produces actionable reports in plain English.
Key Features
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Real browser crawling with authentication support: Buggy.run uses a headless browser to navigate web applications, including pages behind login forms. Users can provide test credentials, allowing the scanner to reach internal dashboards, settings panels, and API endpoints that typical surface-level scanners miss.
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56+ automated security checks: Each discovered page is tested against a comprehensive set of checks covering HTTP security headers, TLS/SSL configuration, cookie security, information disclosure, authentication weaknesses, input validation, server-side injection, client-side vulnerabilities, forced browsing, and protocol issues.
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AI-powered data leak analysis: Every HTTP response captured during the crawl is inspected by an AI model for session tokens, personally identifiable information (PII), API keys, and other secrets that should not be transmitted. This catches context-dependent leaks, such as an authentication token echoed in a JSON response body.
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Interactive AI agent for triage: Findings are ranked by severity and explained in natural language. Users can ask follow-up questions to the built-in AI agent, which provides specific remediation steps. Each finding can be resolved or dismissed with a single click.
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Safe, capped load and rate-limit testing: The platform includes non-destructive tests that probe for missing rate limits and account lockout mechanisms without overwhelming the target application.
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Continuous and on-demand auditing: Users can trigger manual audits before a release or schedule recurring scans to catch regressions and newly exposed endpoints automatically.
How It Works
An audit begins when a user submits a target URL and optional test credentials. Buggy.run then launches a six-phase engine: it crawls public and authenticated pages, captures all network traffic, runs 56+ security checks on each page, analyzes responses for data leaks, fuzzes discovered inputs with attack payloads, and performs safe load tests. After completion, the AI agent triages all findings into a ranked list with plain-English explanations and recommended fixes.
Who It's For
Buggy.run is built for indie founders, small development teams, and agencies that ship web applications but lack dedicated security staff. It suits developers who want to catch vulnerabilities before they become breaches without learning specialized security tooling or paying for expensive manual audits.
Pros & Cons
The Good
- Crawls authenticated pages using test credentials, not just public endpoints.
- AI agent explains each finding in plain English with specific remediation steps.
- Over 56 security checks per page covering headers, TLS, cookies, injection, and more.
- Safe, capped load tests reveal missing rate limits without taking the app down.
- Continuous auditing catches regressions and new vulnerabilities as code ships.
The Bad
- Limited to 10 audits per month on the Starter plan, which may be restrictive for active teams.
- No support for on-premise or self-hosted deployment; requires sending traffic to an external service.
- The AI agent's accuracy depends on the quality of the crawl and may miss complex business logic flaws.
