ShieldFlow stops card testing, bots, and fake orders at checkout — not after. 25 detection rules, device fingerprinting, VAMP monitoring, and email cleanup. The protection Shopify's built-in tools don't give you.
⚠️ VISA VAMP THRESHOLD DROPS TO 1.5% — APRIL 2026
Exceed it and Shopify terminates your Payments account. ShieldFlow is the only app that monitors your dispute ratio and alerts you before you reach the danger zone.
Silently collects canvas hash, WebGL, screen, mouse behavior, keystroke timing, and bot signatures — before checkout even starts. No cookies, no popups.
When the customer clicks "Pay", ShieldFlow scores the checkout in <500ms. Block = checkout stopped. Warn = order held for review. Allow = instant pass. No other app does this.
Orders from fraud get auto-cancelled, tagged, and held. Fake email profiles removed from Klaviyo, Mailchimp, Omnisend automatically. Express checkout (Shop Pay) covered too.
25 detection rules across 6 categories. Every feature built for Shopify's latest APIs.
Uses Shopify's block_progress API to stop fraud before payment processes. No processing fees on blocked checkouts. No other app does this.
Canvas hash, WebGL renderer, screen, timezone, hardware — creates a unique device signature. Bots change IPs but can't change their fingerprint.
Tracks your Visa dispute ratio daily. Alerts at 0.5% (safety buffer). Visa threshold: 1.5%. Only ShieldFlow monitors this — protect your Shopify Payments account.
Mouse movement patterns, keystroke timing, form fill speed, scroll behavior. Bots complete forms in 0.3 seconds — humans take 10+. We measure the difference.
Three layers: TOR exit nodes from official Tor Project, 200+ datacenter IP prefixes (AWS, DO, Vultr, Hetzner, OVH), plus optional API for VPN/proxy detection.
Compares real-time checkout volume to 7-day baseline. 5x spike? Score increases automatically. Email alert sent within 1 hour. Adaptive, not static.
Detects Puppeteer, Selenium, PhantomJS, webdriver. Hidden honeypot field catches bots that fill every form field — zero false positives.
When a checkout is blocked, fake email profiles auto-removed from Klaviyo, Mailchimp, Omnisend, and Shopify Email. Stop paying for bot subscribers.
14 built-in + 11 advanced rules. Rate limiting, email validation, geo-blocking, card testing pattern, order value checks. Every rule tunable with score sliders.
ShieldFlow has 5 unique capabilities no competitor offers.
Other apps analyze orders after they're created. ShieldFlow blocks before payment — saving processing fees and preventing chargebacks at the source.
Blockify uses IP blocking. NoFraud uses order data. ShieldFlow collects canvas + WebGL + behavioral signals from the storefront — a true device identity that can't be spoofed.
No other app tracks your Visa dispute ratio. Visa's threshold drops to 1.5% in April 2026. ShieldFlow monitors daily, sends alerts, shows projections. Protect your payments account.
Bots sign up → Klaviyo fills with garbage → you pay more → deliverability drops. ShieldFlow auto-removes blocked profiles from 4 email platforms. Nobody else does this.
ML-based apps are black boxes — "high risk" with no explanation. ShieldFlow shows exactly which rules triggered, scores, and why. You understand every decision.
If ShieldFlow's backend or Redis is down, checkouts pass through. Legitimate customers are never blocked by infrastructure failures. Your revenue is safe.
Bots sign up with fake emails → your Klaviyo list fills with garbage → you pay more → deliverability drops → real customers don't see your emails.
ShieldFlow removes fake profiles from 4 platforms the moment a checkout is blocked:
Visa's Acquirer Monitoring Program (VAMP) threshold drops to 1.5% in April 2026. Exceed it and Shopify terminates your Payments account.
ShieldFlow monitors your dispute-to-order ratio daily, tracks 30-day trends, shows open disputes with response deadlines, and sends email alerts when you approach danger zones.
Every plan includes core fraud protection. No credit card required. 7-day trial on all paid plans.
For stores getting started
For growing stores
7-day free trial
For serious stores
7-day free trial
For high-volume stores
7-day free trial
No. Fraud scoring completes in under 500ms. If our service is ever unavailable, we "fail open" — checkouts pass through. Legitimate customers are never blocked by infrastructure issues.
Yes. Express checkout orders that bypass the checkout UI are caught by our server-side safety net via webhooks. Orders are auto-cancelled if flagged as fraud.
Blockify blocks visitors (IP/country). ShieldFlow blocks fraud at checkout with device fingerprinting, behavioral analysis, and 25 detection rules. We also offer VAMP monitoring and email cleanup — features Blockify doesn't have.
NoFraud and Signifyd analyze orders after creation (post-order). ShieldFlow blocks at checkout (pre-order). They charge 1% per order or $250+/mo. ShieldFlow starts free. They're black-box ML. ShieldFlow is transparent — you see exactly which rules fired.
VAMP (Visa Acquirer Monitoring Program) tracks your dispute-to-transaction ratio. The threshold drops to 1.5% in April 2026. Exceed it and Shopify terminates your Payments account. ShieldFlow monitors this daily and alerts you before you're in danger.
Rarely. ShieldFlow uses 25 rules with 20+ signals combined. The verdict is based on the highest score across all triggered rules. You can set suspicious checkouts to "Warn" (hold for review) instead of "Block". You control every threshold.
No. Email cleanup is a bonus feature (Pro plan). Core fraud protection works independently. ShieldFlow also supports Mailchimp, Omnisend, and Shopify Email.
Yes. 25 built-in rules with adjustable score sliders and thresholds. Plus custom rules with a visual condition builder and 6 templates. Context-aware operators prevent invalid rule configurations.
Protection pauses — checkouts pass through without fraud checking. Upgrade your plan or wait for the next billing cycle. Your data is never deleted.
Stop it before checkout. Start protecting your store in 2 minutes.
Install Free on Shopify →Free forever for stores under 200 checkouts/mo. No credit card required.