Guardian is the developer-first defense layer that answers the most critical question in modern web security: “Can I trust this request?”

While traditional solutions focus solely on identification, Guardian combines high-fidelity Visitor IDs with Browser Smart Signals to reveal the true context behind every click. We help engineering and security teams guard every visitor, stopping fraud without sacrificing user experience.

How We Protect Your Stack

We move beyond simple fingerprinting. Our lightweight SDK analyzes 100+ signals in real-time to return a comprehensive JSON risk assessment, including:

🛡️ Bot & Automation Detection: AI-driven analysis to spot headless browsers, automation tools, and non-human traffic.

🕵️‍♂️ Incognito & Tampering Checks: Detects anti-detect browsers, spoofed user agents, and privacy masking techniques.

🌍 Advanced Network Intelligence: Instantly identifies VPNs, Proxies, Tor exit nodes, and Data Center IPs with abuse history.

⚡ Native Velocity Checks: Built-in tracking of request frequency (1h, 24h, 7d) to catch brute-force attacks and high-activity fraudsters instantly.

🎯 Trust Scores: A normalized 0-100 score to automate your allow/deny logic in one line of code.

Core Use Cases
- New Account Fraud: Block fake sign-ups and bot-driven registrations.
- Payment Fraud: Stop stolen cards and chargebacks by correlating device history.
- Account Takeover (ATO): Flag login attempts from unrecognized devices or suspicious IPs.
- Returning User Experience: Remove MFA friction for high-trust, recognized visitors.

Why Developers Choose Guardian
1. One-Commit Integration: Initialize the agent and get protected in minutes.

2. Transparent Pricing: A generous free tier and clear scaling—no "Contact Sales" barriers for Pro features.

3. Privacy-First: Fully GDPR and CCPA compliant by design.

Don’t just ID your users. Guard them.

GuardianStack

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GuardianStack

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