Antifraud Tools — 32 options compared (2026)
Antifraud tools split into five rough camps: payment fraud (Stripe Radar, Sift, Signifyd, Riskified, Kount), bot mitigation and captcha (Cloudflare Turnstile, hCaptcha, reCAPTCHA, DataDome, Arkose), IP/device intelligence (MaxMind minFraud, IPQualityScore, FingerprintJS), identity / KYC / AML (Persona, Alloy, ComplyAdvantage), and click/affiliate fraud (TrafficGuard, ClickCease, Spider AF, Anura). Pricing ranges from free CDN-bundled (Turnstile, hCaptcha basic) through small-business SaaS ($59-$1,000/mo) up to enterprise quote-only contracts ($30K-$200K+/yr). This directory compares them with honest strengths and limitations — what each one actually catches, what it misses, and which fraud surface it covers. Updated 2026.
Referral / signup antifraud pipeline — Turnstile + 9 automated checks + 14-day hold + admin queue. From $99 one-time.
Built-in fraud scoring for Stripe payments — free with standard fees, $0.02/transaction add-on for custom rules.
Sift
paidDigital Trust & Safety Suite — payment fraud, content abuse, ATO. Quote-based, volume-priced.
Riskified
paidChargeback-guarantee fraud platform for ecommerce — typically 1-3% of approved sales, quote-based.
Signifyd
paidCommerce protection with full chargeback liability shift — % of approved orders, enterprise quote.
Kount (Equifax)
paidMature ecommerce + payment fraud platform owned by Equifax — quote-based, mid-market and enterprise.
Forter
paidReal-time ecommerce fraud platform with policy abuse + ATO modules — quote-based, enterprise focus.
ClearSale
paidHybrid AI + manual review for ecommerce — chargeback guarantee, popular in LATAM, quote-based.
Per-transaction pricing fraud screening (~$0.05-$0.99/order, plus chargeback-guarantee tier).
Per-query fraud-risk scoring API — from $0.005/lookup, MaxMind's flagship paid product alongside GeoIP.
Per-query IP / email / device / URL fraud scoring API — generous free tier, paid from $0.0008/query.
Browser fingerprinting library + paid Pro API — free OSS core, paid plans from $99/mo.
Free Cloudflare CAPTCHA replacement — invisible by default, 1M challenges/mo on free tier.
Privacy-focused captcha alternative to reCAPTCHA — free Basic, paid Enterprise / Pro.
Google's enterprise captcha + risk scoring — first 10K assessments/mo free, $1/1K above.
Arkose Labs
paidEnterprise bot mitigation with adaptive challenge games (MatchKey) — quote-based.
DataDome
paidReal-time bot protection at the edge — quote-based, typical SMB starts ~$2,000/mo.
Enterprise bot defense + ad fraud + ATO — quote-based, formerly PerimeterX, large media/retail focus.
Account-takeover prevention + bot detection — published pricing from $499/mo.
Sardine
paidBehavioral biometrics + fraud + KYC for fintech and crypto — quote-based.
API-first fraud screening with social-media + email enrichment — published from $599/mo.
Spider AF
paidAd / click / affiliate fraud detection — quote-based, popular with paid-traffic teams in JP and APAC.
TrafficGuard
paidMulti-channel click / affiliate / app-install fraud protection — quote-based.
Anura
paidReal-time ad / affiliate fraud screening — quote-based, focuses on minimizing false positives.
Google Ads / Meta click-fraud blocker for SMBs — published $59-$179/mo.
PPC click-fraud protection for Google Ads — published $79-$249/mo with rule engine.
Identity verification platform — published per-check pricing from ~$0.50-$2.00, used widely in fintech.
Alloy
paidIdentity decisioning platform for banks and fintech — orchestrates 200+ data sources, quote-based.
ComplyAdvantage
paidAML + sanctions screening + transaction monitoring — quote-based, regulated-industry focus.
Feedzai
paidEnterprise risk-management cloud for banking and acquirers — quote-based, large-bank focus.
Ravelin
paidML-based fraud + ATO + marketplace abuse — quote-based, strong in ride-sharing and food-delivery.
Order-screening rules engine for SMB ecommerce — published from $49/mo.
FAQ
What is antifraud and what kinds of fraud do these tools catch?
Antifraud is a set of layered defenses against malicious actors abusing online systems — stolen-card payments and chargebacks, stuffed credentials and account takeover, multi-account farming on referral and loyalty programs, click fraud on paid ads, fake signups, and synthetic-identity KYC fraud. No single tool covers all of these — most production stacks combine 3-5 specialized tools.
Payment fraud vs bot mitigation vs identity — what's the difference?
Payment fraud tools (Stripe Radar, Sift, Riskified, Signifyd, Kount) score transactions for chargeback risk and sometimes guarantee approved orders. Bot mitigation (Turnstile, hCaptcha, DataDome, Arkose, HUMAN) blocks automated traffic at the edge before it reaches your forms. Identity / KYC (Persona, Alloy, ComplyAdvantage) verifies that a real legal person is behind a signup. They are complementary, not interchangeable.
Free vs paid — what changes?
Free tools (Cloudflare Turnstile up to 1M challenges/mo, hCaptcha basic, reCAPTCHA v3, MaxMind GeoLite) cover the lowest-effort attack class — drive-by bots and obvious script kiddies. Paid SMB tiers ($60-$1,000/mo) add device fingerprinting, behavioral models, account-takeover detection, and tighter false-positive control. Enterprise tiers ($30K-$200K/yr: Sift, Signifyd, Riskified, DataDome) add chargeback liability shifts, dedicated risk-ops support, and SAML/SSO.
Chargeback guarantee — what is it actually?
Some payment-fraud platforms (Riskified, Signifyd, NoFraud) reimburse the merchant in full if a transaction they approved later results in a fraudulent chargeback. Pricing is typically a percentage of approved sales (1-3%). Worth it for high-AOV ecommerce; over-priced for low-margin SaaS where Stripe Radar's flat-fee model wins.
What does GuardLabs Anti-Fraud actually cover?
GuardLabs Anti-Fraud is a referral-program / signup-flow protection pipeline — Cloudflare Turnstile + 9 automated checks (IP match, device fingerprint, timing burst, disposable email, etc.) + 14-day hold + admin queue. It is not a payment-fraud platform like Stripe Radar or Sift — it does not score card transactions. Best used alongside a payment-fraud tool, not instead of one.
Which tool should a small business start with?
If you process payments through Stripe — Stripe Radar is already on, just enable Radar for Fraud Teams ($0.02/screened transaction). Layer Cloudflare Turnstile (free) on signup and login. If you run a referral program — add a referral antifraud pipeline (GuardLabs Anti-Fraud, or build your own from the IPQS / FingerprintJS / Turnstile primitives). Avoid enterprise quote-only platforms until you actually have the volume to need them.