AI use case

AI order fraud screening for ecommerce checkout

AI order fraud screening decides, at the moment an online order is placed, whether to accept it, hold it for review or decline it, for an online retailer or marketplace. It draws on the buyer's device, behaviour, identity and order history, so genuine orders are approved quickly and fraudulent ones are stopped before they ship, often backed by a vendor guarantee against the chargebacks that slip through.

By Len Debets · Last verified 29 September 2026 · 9 public deployments

6%
Reported revenue uplift
Mango, vendor claim.
USD 48,000 to USD 224,000
Indicative value per year
An online retailer with 500,000 orders a year and an 80 USD average order value. Worked example, see how it is calculated.

What problem does it solve?

Every online order is a small bet. Approve it, and most of the time a genuine customer gets their package; occasionally the order was placed with a stolen card, a fake identity or a friendly fraud claim waiting to happen, and the merchant absorbs the chargeback, the lost goods and a fee on top. Decline it, and most of the time fraud was avoided; occasionally a loyal customer was turned away for looking unusual on paper, and a merchant that never checks its false decline rate has no way of knowing how many of those customers quietly stop coming back.

Manual review works at a small scale, but reviewers cannot see the patterns that only show up across thousands of merchants. Static rules age quickly: a rule written for last season's attack blocks genuine customers long after the attack has moved on. The shift is to a model that scores the whole order in the time a checkout page can wait, plus a guarantee from the vendor that puts its own money behind the call, which is what turns a fraud score into a decision a merchant is willing to automate.

How does it work?

  1. Score the order the instant it is placed. Device, browser, email, shipping and billing details, behaviour on the site and payment data feed a model trained across many merchants, not just this one's own history.
  2. Add the wider picture. The score is checked against known fraud rings, stolen identity lists and the buyer's own order history with this merchant and, where the vendor pools data across its network, with others.
  3. Decide inside checkout. The order is accepted, held for review or declined within the time the checkout page can wait, before the customer moves on to payment confirmation.
  4. Guarantee the call. Vendors that offer a chargeback guarantee cover the fraud and, often, "item not received" losses on orders they accepted, and take on the manual review and the chargeback dispute themselves.
  5. Learn from outcomes. Confirmed fraud, disputed chargebacks and false declines feed back into the model and the merchant's own risk policy.
Audience
Back office
Autonomy
Autonomous
Adoption
Mainstream
Channels
API and system to system

What is it worth?

Benchmarks are computed from the public deployments below: one data point per organization per KPI, with who made each claim.

Value benchmarks for AI order fraud screening for ecommerce checkout
KPIMedianReported rangeData pointsClaimed by
Revenue upliftToo few to pool
6%
11 vendor

Value drivers: Risk and loss reduction, Revenue growth, Lower cost to serve.

Indicative value

An online retailer with 500,000 orders a year and an 80 USD average order value

USD 48,000 to USD 224,000

Annual fraud chargeback losses avoided per year

How this is calculated

Formula: orders * aov * chargebackRate * reduction. The low scenario uses every low input, the high scenario every high input.

InputLowHighBasis
Orders per year orders, orders per year500,000500,000The reference retailer.
Average order value aov, USD8080Editorial assumption for a mid sized online retailer, replace with your own.
Fraud chargeback rate before screening chargebackRate, fraction of orders0.0030.008Editorial assumption, replace with your own chargeback rate.
Share of fraud chargeback losses avoided reduction, fraction of chargeback losses0.40.7Editorial assumption, replace with your own. No evidence record on this page reports a clean before and after fraud loss number: Signifyd's published figures for Cymbiotika, Rainbow Shops and Philips are reductions in the overall chargeback rate, which mixes fraud and non fraud or abusive chargebacks, and Adorama's "eliminated fraud chargeback losses" comes with no before figure, so none of them is used to set this range.

What it leaves out: Gross avoided chargeback loss only. It leaves out the fee charged for the screening or guarantee service, any change in the approval rate for genuine customers, and the operational cost of running a checkout integration.

Who already uses it?

9 public deployments, strongest evidence first. Grades: A regulator or audit, B the organization itself, C vendor case study, D anonymous or estimate.

Harry's

United States · Retail and ecommerce · 2024

ProductionGrade C

Harry's is a men's grooming and personal care brand selling direct to consumers, with operations in North America and the UK. A few months after launch it looked for a proactive, scalable answer to promo abuse, payment abuse, account abuse and friendly fraud, including resellers opening fake accounts to buy blades in bulk and fraudsters using its checkout for stolen card testing. It adopted Sift and built an internal workflow around Sift Scores, whose ranges decide when to block an order or account or send it to review, and runs this with a full time fraud team of one.

No outcome disclosed.

Adorama

North America · Retail and ecommerce · 2023

ProductionGrade C

Adorama is a US audio, video and photography electronics retailer. Its previous fraud provider declined a high volume of orders, a growing number of which Adorama's own team reviewed and overturned. It moved to Signifyd's Commerce Protection Platform to automate order review, lift approval rates beyond the previous provider and reduce the manual work required of its team. The retailer says it has not had to grow its team even though fraud attempts keep rising each year.

No outcome disclosed.

Philips

Europe · Retail and ecommerce · 2023

ProductionGrade C

Philips runs a direct to consumer ecommerce storefront on SAP Hybris alongside its wider health technology business. Facing rising chargebacks and payment refusals at checkout, it deployed Signifyd's Guaranteed Fraud Protection to screen and decide on orders automatically. Ivone Miranda, Philips' Consumer Experience Engagement and Care Lead, says the team no longer needs to worry about chargebacks, checkout issues or payment refusals.

No outcome disclosed.

Rainbow Shops

United States · Retail and ecommerce · 2022

ProductionGrade C

Rainbow Shops is a US value apparel retailer for women and children. It ran a machine learning fraud tool that worked until it moved its checkout from Salesforce Commerce Cloud to Shopify and found its fraud provider had no strong Shopify integration. It switched to Signifyd for order screening, the chargeback guarantee and automated chargeback disputes, so its own staff no longer file disputes by hand.

No outcome disclosed.

Cymbiotika

North America · Retail and ecommerce · 2021

ProductionGrade C

Cymbiotika is a supplements and wellness brand on Shopify, founded in 2018, with a large share of recurring subscription orders. As order volume grew, false positives led to many legitimate subscriptions being cancelled, causing friction for loyal customers and driving hundreds of support inquiries a day. Cymbiotika became a Signifyd customer in 2021, using order screening to decide in real time whether to accept each order, plus Complete Chargeback Protection, which Signifyd's own site describes as cover against both fraud and non fraud chargebacks.

No outcome disclosed.

Hot Topic

North America · Retail and ecommerce · 2021

ProductionGrade C

Hot Topic is a US mall based retailer of entertainment and music merchandise. It selected Signifyd's Commerce Protection Platform, integrated with Salesforce Commerce Cloud, to improve order decisioning and cut false declines using signals from Signifyd's merchant network, with every order backed by a financial guarantee. Deploying Guaranteed Fraud Protection let Hot Topic automate the order review decision end to end while raising the share of orders it approves.

  • Automation rate: 100%
    "By implementing Signifyd's Guaranteed Fraud Protection, Hot Topic has increased approval rates to over 99% while automating 100% of orders."
    Claimed by: vendor

Mango

Spain · Retail and ecommerce · 2021

ProductionGrade C

Mango, the Spanish fashion retailer, used Signifyd's order screening to review orders that its previous fraud solution was declining. Signifyd's own case study reports that it consistently approved over 60% of the orders the incumbent solution had declined, an uplift in approved gross merchandise value, with each approved order still covered by Signifyd's chargeback guarantee.

  • Revenue uplift: 6%
    "Signifyd has been able to consistently approve over 60% of orders that were being declined by the incumbent solution, resulting in a 6% uplift in approved GMV."
    Claimed by: vendor

Jerome's Furniture

United States · Retail and ecommerce · 2019

ProductionGrade C

Jerome's Furniture, a US furniture retailer, uses Signifyd's Guaranteed Fraud Protection, integrated with Shopify, to decide orders automatically instead of investigating them by hand. Scott Perry, Jerome's Furniture's Senior Vice President of Digital IT and Omnichannel, says "I don't think we've had one fraud case since we started with Signifyd." Signifyd's case study reports a 99% reduction in cases reviewed, a 4% increase in accepted orders and zero chargeback losses.

  • Alert volume reduction: 99%
    "99% Reduction in cases reviewed"
    Claimed by: vendor

Structube

Canada · Retail and ecommerce · 2019

ProductionGrade C

Structube, the Canadian furniture retailer, deployed Signifyd's Guaranteed Fraud Protection so orders it once had to manually investigate are decided automatically, with the guarantee covering any fraud that slips through. Tony Trew, Structube's Director of Marketing and Ecommerce, says "all we needed was Signifyd's approval to ship the order." Signifyd's full case study says Structube left manual order review to Signifyd's machine learning, and its stat tiles report a 95% reduction in cases reviewed, a 5% increase in accepted orders and zero chargebacks.

  • Alert volume reduction: 95%
    "95% Reduction in cases reviewed"
    Claimed by: vendor

How do you implement it?

A model agnostic playbook: what to prepare, the order to build in, and what goes wrong.

Data you need

  • Historical order, chargeback and refund data with fraud outcomes labelled
  • Device, browser and behavioural signals captured at checkout
  • Product catalogue and shipping data to flag high risk categories

Systems to integrate

  • Ecommerce platform or checkout
  • Payment service provider and card network chargeback feeds
  • Order management system for holds and cancellations
  • Customer account and order history

Complexity: Medium

A first launch is often quick because most vendors ship a ready made plugin for platforms such as Shopify. The real work is agreeing which categories, price bands and countries get a different policy, cleaning up the chargeback and refund history the model or the guarantee contract will be judged against, and rebuilding that baseline whenever the checkout platform changes.

  1. 1

    Separate the policy from the model

    Decide, as a business, which categories, countries and price bands need a stricter or looser policy, and write it down before choosing thresholds, so a change in the model does not silently change the business rule.

  2. 2

    Agree what the guarantee actually covers

    Read the contract for carve outs, for example policy abuse, promotion abuse or a cut off for filing a dispute, and keep a short internal note of what is and is not covered so support staff do not promise more than the guarantee delivers.

  3. 3

    Feed it the full order context

    Connect device, behaviour, shipping and account history, not just the payment details, so the model has as much signal as a human reviewer once had.

  4. 4

    Watch the false decline rate as closely as fraud

    Sample declined orders every week and call or message a portion of the customers to check whether they were genuine, since a merchant only sees the fraud it caught, not the customers it turned away.

  5. 5

    Rebaseline after every checkout change

    A platform migration changes the device and session signals the model sees; treat the weeks after a checkout replatforming as a fresh baseline for chargeback and false decline rates, not a continuation of the old ones.

Guardrails

  • Every automatic decline is logged with the reasons and can be challenged by the customer
  • A held order stops the shipment before a decision, never after
  • The score and its inputs are retained for the length of the chargeback dispute window
  • Payment and personal data reach the model only through the vendor's own pipeline, never typed into a general purpose prompt

KPIs to instrument

  • Chargeback rate and chargeback win rate, before and after
  • Approval rate, checked against a manually confirmed sample for false declines
  • Fraud losses net of the fee paid for the guarantee
  • Manual review queue depth and time to decision, where the merchant still reviews orders itself

Human in the loop

Once a guarantee is in place, individual orders are rarely reviewed by the retailer's own staff: that manual review sits with the vendor's analysts, who investigate borderline orders and defend disputed chargebacks with the merchant's evidence. On the retailer's side, a person still owns the risk policy, reviews declined and disputed orders in aggregate every month, and signs off before any threshold or policy change goes live.

Common failure modes

Good customers declined at the worst moment
Aggressive thresholds turn away genuine repeat customers, particularly on subscription renewals. Watch complaints and repeat purchase rate by segment, not only the chargeback number: at Cymbiotika, false positives cancelled legitimate subscriptions and drove hundreds of support inquiries a day, which is why it moved to a fraud vendor aimed at reducing false positives.
The guarantee covers less than assumed
Guarantee contracts vary by vendor and plan. Check yours for carve outs such as policy abuse, promotion abuse or a cut off for filing a dispute, and treat every declined chargeback type separately rather than assuming a single guarantee number covers all of them.
Drift after a platform migration
Moving checkout platforms changes the device and session signals the model sees; treat the weeks after a migration as a fresh baseline for chargeback and false decline rates, not a continuation of the old ones. Confirm the new platform has a proven integration with your fraud vendor before you commit to the move: a weak integration is what pushed Rainbow Shops to switch vendors when it replatformed onto Shopify.

What are the risks and rules?

EU AI Act

Minimal risk

Deciding whether to accept a commercial order is not listed in Annex III: it is not a creditworthiness, employment, essential service or biometric decision about a natural person. It stays minimal risk provided the decision is limited to a commercial transaction and does not extend into scoring the buyer's general creditworthiness or blocking access to an essential service.

Rules that apply

Guidance

  • Guidelines on automated individual decision making and profiling (WP251rev.01) (Article 29 Working Party, endorsed by the European Data Protection Board, Europe). The supervisory guidance behind Article 22: it explains when a solely automated decision, which a firm outright order decline can be, has a legal or similarly significant effect, and what that gives the customer a right to, including human intervention and a way to contest the decision.

Controls to put in place

  • A documented risk policy with an owner, reviewed whenever thresholds or the model change
  • A route for a declined customer to reach a human and contest the decision
  • Regular checks of decline rates across regions, price bands and payment methods for unfair bias

Frequently asked questions

How is order fraud screening different from card fraud scoring?

Authorization fraud scoring runs in milliseconds while the card authorization is still open, done by the issuer, the network, the acquirer, or a merchant side payment tool such as Stripe Radar. Order fraud screening also runs at checkout, but decides on the whole order, not just the card: it can pull in shipping, account and behavioural history alongside the payment data, and is often paired with a chargeback guarantee that shifts the fraud risk onto the vendor.

How much can order fraud screening reduce chargebacks?

It depends heavily on the merchant's starting point and product mix, and on which product actually moved the number. Signifyd's own case study on the supplement brand Cymbiotika credits a chargeback reduction to Complete Chargeback Protection, a guarantee product that covers both fraud and non fraud chargebacks, not to the order screening decision on its own, so it is not a clean read on what screening by itself achieves for any specific business.

Does a chargeback guarantee remove the retailer's own fraud risk entirely?

No. A guarantee only covers what its contract says: commonly fraud and, on some plans, "item not received" chargebacks on orders the vendor accepted. Check your own contract for carve outs such as policy abuse, promotion abuse or a cut off for filing a dispute, rather than assuming it covers every chargeback type.

Can an online retailer decline an order by AI alone under GDPR?

A solely automated decision with a significant effect on a customer, which an outright decline can be, gives EU customers a right under Article 22 to ask for human review. In practice, offer a support channel so a declined customer can ask a person to look again, rather than routing every single decision through a human up front.

How to cite this page

Blits.ai AI Use Case Library, "AI order fraud screening for ecommerce checkout", last verified 29 September 2026, https://www.blits.ai/ai-use-cases/ecommerce-order-fraud-screening. Licensed under CC BY 4.0. Method: how we verify use cases.

Changelog
  • 29 September 2026: First published

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