battles / Fraud
Accertify vs Signifyd
Accertify ($5,000/mo/mo, vibe code 3/10) vs Signifyd ($2,000/mo/mo, vibe code 5/10). Signifyd is the easier one to rebuild yourself — here is what you lose either way.
Fraud
$5,000/mo/mo
- MVP
- 2 weeks
- Full replacement
- 12-24 months, with missing cross-merchant threat data and lack of chargeback dispute automation
Fraud
$2,000/mo/mo
- MVP
- 2-3 weeks
- Full replacement
- 12-18 months
easier to rebuild
get the build prompt →price gap / year
$36,000/mo
running both / year
$84,000/mo
our call
Start with Signifyd — highest vibe code, weakest moat.
Accertify
Building a custom rules engine with an AI assistant takes a couple of weeks, but Accertify's moat is its vast cross-merchant transaction database and hardware fingerprint network. An isolated self-hosted application has no access to global stolen card data or collective threat intelligence. You can easily build the admin workflow, but your fraud engine will be blind to external threat actors.
you can rebuild
- Manual order review queue and analyst decision workflow UI
- Custom merchant-defined risk scoring rules engine
- Basic velocity checking and IP geolocation distance verification
- Webhook triggers to hold or release risky orders in ecommerce backends
- Basic analytics dashboards tracking approved versus flagged transactions
what you lose
- Cross-merchant global transaction and stolen card threat network
- Automated chargeback representment and dispute resolution pipelines
- Hardware-level mobile and web browser device fingerprinting SDKs
- Dedicated 24/7 enterprise threat analyst team and performance SLAs
- Pre-built processor and card brand network dispute connections
real moats
- Proprietary cross-merchant fraud signals accumulated across billions of checkout events
- Direct integrations with issuing banks and chargeback networks
- Contractual performance SLAs and financial chargeback protection options
open source escape hatches
- Zeek BSD-3-Clause
- PostHog MIT
- Fraud-Detection-System (Community) MIT
Signifyd
You can build the device fingerprinting script, rules engine, and Shopify order-hold webhook with AI in a weekend. What you cannot build is the bank balance required to reimburse merchants when your algorithm misclassifies a $3,000 stolen-card order.
you can rebuild
- Order hold and manual review queue automation
- Device fingerprinting and session analytics collection
- Custom risk-scoring rules engine (IP velocity, address matching, order value limits)
- Webhook routing to Shopify, Magento, and WooCommerce for order cancellation
- Basic chargeback notification webhook listeners
what you lose
- 100% financial chargeback guarantee on approved orders
- Access to Signifyd's 10,000+ merchant global identity graph
- Automated 48-hour chargeback reimbursement payouts
- Third-party enterprise liability offloading for accounting audit compliance
- Dedicated human fraud analysts for manual order re-reviews
real moats
- Balance sheet reserves capable of liquidating millions in chargeback indemnifications monthly.
- Cross-merchant device and identity graph built over a decade across 10,000+ enterprise retailers.
- Direct integrations into card network early-warning feeds (Ethoca, Verifi, RDR).
open source escape hatches
- FraudLabs / open rules engines (Drools) Apache-2.0
- Feedzai alternatives — River BSD-3
- MaxMind minFraud open clients Apache-2.0
Questions people ask
Which is easier to rebuild with AI, Accertify or Signifyd?
Signifyd. It scores 5/10 on vibe code with a moat of 8/10, so an AI-assisted MVP takes about 2-3 weeks and a full replacement about 12-18 months.
Which one costs less, Accertify or Signifyd?
Signifyd at $2,000/mo/mo for a typical mid-market store. The gap between the two is about $36,000/mo a year.
What do I lose if I replace Accertify?
Cross-merchant global transaction and stolen card threat network Automated chargeback representment and dispute resolution pipelines Hardware-level mobile and web browser device fingerprinting SDKs
What do I lose if I replace Signifyd?
100% financial chargeback guarantee on approved orders Access to Signifyd's 10,000+ merchant global identity graph Automated 48-hour chargeback reimbursement payouts
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