Modern attackers no longer rely on obvious datacenter IP addresses.

Instead a new trend has emerged, they hide behind rotating residential proxy networks — constantly switching IP addresses while maintaining the same browser fingerprint and session behavior. To traditional security controls, this traffic often appears legitimate.

Today, we’re launching Rotating Residential Proxy (RRP) Detection for FraudGuard customers on Professional plans and above.

While commonly associated with residential proxy networks, this detection method applies to any rotating proxy infrastructure — including residential, commercial, datacenter, or hybrid proxy networks — where IP rotation occurs while maintaining a consistent client fingerprint.

👉 Full API documentation:
View Full RRP API Documentation

Why Rotating Residential Proxies Are Dangerous

Rotating proxy networks are frequently abused to:

  • Bypass rate limits
  • Evade IP-based security controls
  • Automate account takeovers
  • Conduct credential stuffing attacks
  • Scrape pricing and content at scale
  • Create and operate fake accounts

Because the IP addresses belong to real residential ISPs, these attacks often evade simple blocklists and reputation checks.

Attackers rotate IPs rapidly — but the browser fingerprint and session behavior stay the same.

That’s the weakness we target.

What RRP Detection Does

FraudGuard’s RRP Detection monitors client sessions for:

  • Multiple distinct public IP addresses
  • Observed within a short time window
  • While maintaining a stable browser fingerprint

When rotation behavior is detected, FraudGuard generates a structured event with:

  • Confidence score (0–100)
  • Number of distinct IPs observed
  • Full IP list
  • Detection reasons
  • Timestamp history

Each event is further enriched by FraudGuard’s Attack Correlation Engine (ACE) — a system refined over more than 10 years of global threat analysis. ACE correlates IP intelligence, behavioral patterns, and historical abuse signals to provide deeper context beyond simple IP rotation detection.

This gives your security team clear evidence of proxy-based abuse.

Lightweight Integration

RRP Detection is simple to deploy.

Embed one JavaScript snippet on protected pages:

<script src="https://api.fraudguard.io/js/fg-rrp.js?key=YOUR_PUBLIC_KEY"></script>

That’s it.

No SDKs.
No heavy client fingerprinting libraries.
No invasive data collection.

Behind the scenes, FraudGuard securely ingests session telemetry and evaluates rotation patterns in real time.

Automation & Enforcement

Customers may optionally enable automated enforcement policies that add high-confidence RRP IP addresses directly to their FraudGuard custom blacklist.

Automated enforcement is configured per account. To enable automated blacklist enforcement, please contact hello@fraudguard.io.

Designed for Real-World Abuse

RRP Detection is particularly effective in environments where attackers rely on high-volume automation designed to mimic legitimate user behavior and evade traditional security controls.

Built for Security Teams

RRP Detection integrates seamlessly with:

  • Your existing FraudGuard blacklist controls
  • Custom enforcement workflows
  • Internal automation policies

Events are accessible via API:

  • GET /api/rrp/events
  • GET /api/rrp/events/<id>

Full documentation:
View Full RRP API Documentation

Available Today

Rotating Residential Proxy Detection is now available to all FraudGuard customers on:

  • Professional
  • Business
  • Enterprise

If you’re already on a qualifying plan, you can deploy today.

If you’re not yet using FraudGuard:

Start your free trial →

Have questions? Reach out to hello@fraudguard.io and our team will help you get started.