Prevent referral abuse.

Prevent self-referrals, fake referrals, and abuse of promotional offers. Protect your product from revenue draining abuse.

  • New accounts
    25,178
    Up 10% from last month

  • Top repeat signups

    Device ID Signups
    64a7f3d5c3e1f2b8a9d0e7c1+58
    64a7f3d5c3e1f2b8a9d0e7c2+15
    64a7f3d5c3e1f2b8a9d0e7c3+13
    64a7f3d5c3e1f2b8a9d0e7c4+8
    64a7f3d5c3e1f2b8a9d0e7c5+8
    64a7f3d5c3e1f2b8a9d0e7c6+8
  • Repeat signups
    8,481
    Up 5% from last month
  • 0% Shared accounts
    0% Repeat signups
    0% Over device limit

  • Challenge history

    Account sharing challenges
  • Conversions
    1,010
    All time: 1,531 conversions

From startups to enterprises, customers trust Rupt.

Alexis Dupont

"Without Rupt, it was impossible to detect account sharers with factual data. Once we added Rupt, we realized we were missing $1M+ ARR and decided to dig into it."

Alexis Dupont

Product Principal, Agorapulse

Adam Siegel

"What we thought would be a real friction point with our existing customers, we saw them go, 'oh my God, why haven't you done this sooner?' They saw it as a feature, not friction."

Adam Siegel

VP of Product Growth, Crexi

Danielle Dyess

"We saw about 4% of account sharers convert immediately after implementing Rupt, which was fantastic."

Danielle Dyess

Principal Product Manager, Sketchy

Andy Romano

"Our first line of defense was to start paying attention to user signals on our own. However, we quickly realized that it was more than a full-time job to accurately identify account sharers."

Andy Romano

Founder, Prep101

Mohamed Abdelmaksoud

"Growth rate doubled after implementing Rupt's repeat sign up detection. This improved the platform's stability and availability and reduced our OpenAI credits usage."

Mohamed Abdelmaksoud

Founding Full Stack Developer, StealthWriter

Nelson Joyce

"Rupt was a plug-and-play win for us. It handled a massive amount of complexity out of the box, started protecting our bottom line almost immediately, and the team has been genuinely responsive every step of the way."

Nelson Joyce

Co-founder, Tettra

Protect promotional offers from abuse.

Accurately detect and prevent referral fraud and promotional offer abuse. Increase conversion rates and reduce revenue leakage.

How it works
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Developers

Easy, modern APIs that developers love.

Rupt is easy to integrate and use. Simple, well-documented APIs, SDKs, and MCPs. Built for the way modern developers work.

Proprietary browser and device fingerprints, returned on every call.

1{
2 "_id": "evl_3yJk7K9xQ2mR4nT8",
3 "action": "login",
4 "verdict": "challenge",
5 "reasons": [ "new_fingerprint", "new_ip", "vpn_detected"],
6 "projectUser": {
7 "external_id": "usr_4f2c8a1b",
8 "email": "user@example.com",
9 "phone": "+12125550100"
10 },
11 "metadata": { "plan": "pro" },
12 "fingerprint": {
13 "_id": "fp_a8b9c7d6e5f4",
14 "hash": "5d41402abc4b2a76b9719d911017c592",
15 "stableHash": "8e2a6c1f9b3d4a7e",
16 "confidence": 0.94,
17 "projectUserCount": 1,
18 "deviceCount": 2,
19 "ipCount": 3
20 },
21 "risks": [
22 {
23 "category": "fake_account",
24 "severity": "high",
25 "score": 7,
26 "indicators": [ "disposable_email", "datacenter_ip"]
27 },
28 {
29 "category": "bot",
30 "severity": "medium",
31 "score": 4,
32 "indicators": [ "headless_browser", "automated_behavior"]
33 },
34 {
35 "category": "account_sharing",
36 "severity": "high",
37 "score": 5,
38 "indicators": [ "concurrent_sessions", "high_computer_count"]
39 },
40 {
41 "category": "ato",
42 "severity": "high",
43 "score": 6,
44 "indicators": [ "new_fingerprint", "new_ip", "ip_is_vpn"]
45 }
46 ],
47 "risk_summary": [
48 { "category": "fake_account", "severity": "high" },
49 { "category": "bot", "severity": "medium" },
50 { "category": "account_sharing", "severity": "high" },
51 { "category": "ato", "severity": "high" }
52 ],
53 "geolocation": {
54 "ip": "203.0.113.42",
55 "latitude": 40.7128,
56 "longitude": -74.0060,
57 "city": "New York",
58 "region": "NY",
59 "country": "United States",
60 "country_code": "US",
61 "security": {
62 "anonymous": false,
63 "proxy": false,
64 "tor": false,
65 "vpn": true,
66 "hosting": false
67 }
68 },
69 "ip": {
70 "address": "203.0.113.42",
71 "asn": "AS15169",
72 "asn_name": "Google LLC",
73 "datacenter": false,
74 "reputation": "suspicious",
75 "blocklists": [ "spamhaus_xbl", "abuseipdb"]
76 },
77 "email": {
78 "address": "user@example.com",
79 "is_disposable": false,
80 "is_webmail": true,
81 "is_valid": true,
82 "is_accept_all": false,
83 "is_verified": true
84 },
85 "phone": {
86 "number": "+12125550100",
87 "carrier": "Verizon",
88 "line_type": "non_fixed_voip",
89 "is_valid": true,
90 "is_verified": false
91 },
92 "policy": {
93 "_id": "pol_z9y8x7w6",
94 "name": "Block multi-accounting",
95 "action": { "type": "challenge" }
96 },
97 "challenge": {
98 "_id": "chl_8d7c6b5a4",
99 "mode": "rupt_managed",
100 "type": "biometric",
101 "redirect_url": "https://challenge.rupt.dev/?challenge=chl_8d7c6b5a4"
102 },
103 "lists": {
104 "matched": [ "trusted_devices"],
105 "allowlisted": true,
106 "blocklisted": false
107 },
108 "createdAt": "2026-05-18T14:32:01.842Z"
109}

Reliable at scale

Billions of requests a year, 150M+ a month, resilient even under high traffic with 99.99% uptime.

100ms response time

100ms p99 latency. Fingerprinting, geolocation, verdicts, and more in one fast, modern API.

Extensible infrastructure

Build custom rules, risks, challenges, trust scores, and more and deploy in real-time.

How do you want to work with Rupt?

Choose how you want to work with us. Try Rupt now or contact sales to get started.

Contact sales Try Rupt now