Best Free WooCommerce Fraud Prevention Plugins: A 2026 Feature Matrix
Store Security · Free-Tier Comparison
Best Free WooCommerce Fraud Prevention Plugins
This comparison ignores every Pro upgrade, every paid tier, and every “starts at $X/month” line. It only counts what you get for zero dollars, right now, forever — so you can pick a tool without a budget conversation.
Most “best fraud prevention plugin” comparisons quietly slide from free features into Pro features halfway through, then rank tools on capabilities you’d actually have to pay for. That’s a reasonable way to answer “what’s the best tool overall” — it’s a bad way to answer “what can I install today with no budget.”
This post only answers the second question. If you want the broader picture — free and paid tiers, six tools, chargeback guarantees, managed services — the best WooCommerce fraud prevention plugins for 2026 guide covers that wider landscape. This post is the narrower companion: every claim below is scoped strictly to what ships in the free tier, and any feature that requires a paid upgrade is either left out or explicitly marked “not available free.”
Conflict of interest disclosure
Disclosure
TrustLens is made by Webstepper, who publishes this blog. It’s included in this comparison, and we’ve tried to apply the exact same free-tier-only standard to TrustLens that we apply to every other tool here — including naming its real limits. If you think we’ve misrepresented anything, we want to know.
The rule for this comparison: free means free
A WooCommerce fraud prevention plugin’s free tier is whatever it ships to a store owner who never enters a credit card and never clicks “upgrade.” That is the only definition used in this post. Three rules follow from it.
- No Pro features counted, even if they’re cheap. If a capability requires a paid plan — $79/year, $29.95/month, whatever — it’s not part of this comparison’s scoring, even where the price is genuinely reasonable.
- Usage caps matter. A “free” plan capped at 500 requests a month is free for stores under that volume and not free for stores above it. That distinction is called out explicitly wherever it applies.
- No free tier means no seat at this table. Some plugins that show up in general “best fraud plugin” searches simply don’t have a free version at all. They’re named later in this post so you know why they’re excluded, but they don’t appear in the comparison table.
Who actually has a free tier
This section is a self-contained answer, because it’s the single most useful piece of information for a budget-conscious reader: as of writing in July 2026, exactly two plugins in the “well-known WooCommerce fraud tools” category ship a genuinely usable free tier — TrustLens and FraudLabs Pro. Stripe Radar is a special case (included automatically with Stripe, not something you install as a standalone plugin). WooCommerce Anti-Fraud by OPMC, a name that comes up constantly in these searches, has no free tier at all — it’s a $139/year purchase through the WooCommerce Marketplace with no free trial and no WordPress.org listing, verified directly at OPMC’s and WooCommerce.com’s product pages as of this writing.
That leaves a genuine two-tool comparison for the free-only reader, plus Stripe Radar as a “you probably already have this” note. The rest of this post treats it that way instead of padding the table with tools that don’t actually belong in a “free” list.
Free-tier feature matrix
Every cell below describes free-tier behavior only. Where a plugin’s marketing materials describe a feature under a paid plan, it’s marked as not available free rather than omitted — so you can see exactly where each tool’s free ceiling sits.
| Free-tier feature | TrustLens (Free) | FraudLabs Pro (Micro/Free) |
|---|---|---|
| Cost | $0, no cap, no expiry | $0, capped at 500 order checks/month or under $25K/month in sales |
| Scoring model | Behavioral — per-customer history across orders, refunds, coupons, disputes | Transactional — per-order API check against IP/email/device/blacklist signals |
| Detection modules (free) | 8 modules: returns, order patterns, coupon abuse, category risk, linked accounts, shipping anomalies, chargeback tracking, card-testing defense | Fraud scoring, IP geolocation, anonymous proxy validation, credit card validation, email validation, transaction velocity, device transaction validation, blacklist validation |
| Return / refund abuse detection | Yes, free | Not part of the product — per-order scoring has no visibility into refund history |
| Coupon abuse detection | Yes, free | Not part of the product |
| Linked accounts / fraud ring detection | Yes, free — shipping/billing/phone/IP/device fingerprint matching | IP-based signals only, as part of general risk scoring — no dedicated cross-account fingerprinting |
| Chargeback / dispute tracking | Yes, free — auto-ingest from Stripe & WooPayments, manual entry for other gateways, dashboard ratio speedometer | Not part of the product — FraudLabs scores before the fact and doesn’t track dispute outcomes |
| Card-testing / velocity defense | Yes, free — 60-second rolling device-fingerprint window, 90-second lockout, Panic Freeze button | Transaction velocity validation is part of the free scoring, but no dedicated device-fingerprint lockout mechanism |
| IP geolocation / proxy / VPN detection | Not part of the product — no IP reputation model | Yes, free — core feature |
| Shared cross-merchant fraud network | No — signals are limited to your own store’s history | Yes, free — blacklist validation draws on FraudLabs’ shared database |
| Per-customer trust score (0–100) | Yes, free | No — scoring is per order, not accumulated per customer |
| Works on a customer’s very first order | Limited — customer stays in the Normal segment until the minimum-order threshold (default 3 orders) is crossed | Yes — IP, email, and device checks all work on order #1 |
| Manual review workflow | Yes, free — customer profile shows every signal; you decide whether to block | Yes, free — Approve / Review / Reject verdict per order |
| Auto-block / auto-cancel without a paid plan | No — free tier never auto-blocks under any condition, verified in the plugin’s own code | Basic validation rules exist on the free Micro plan (5 rules), which can automate a verdict, but rule capacity is capped and expands only on paid plans |
| Data sent off-site | None by default — all scoring happens inside your WordPress install | Yes — order data (IP, email, billing/shipping, card BIN) is sent to the FraudLabs API on every check, which counts against your free quota |
| What happens when you exceed the free cap | No cap to exceed — the free tier has no usage ceiling at any order volume | Orders stop being screened for the rest of the month unless you upgrade — checkout still works, it just isn’t checked |
| WooCommerce HPOS compatible | Yes | Check current version before installing |
Verification note
TrustLens facts were verified directly against the plugin’s readme.txt (version 1.3.8) and source code as of July 2026 — including grepping the auto-block function to confirm it’s gated behind a Pro-only check. FraudLabs Pro facts were verified against its WordPress.org listing and fraudlabspro.com/pricing as of writing. Free-tier limits and feature splits change over time on both sides — re-check before making a decision if you’re reading this well after the fact-check date in the frontmatter.
TrustLens Free
TrustLens Free is a behavioral customer trust-scoring plugin for WooCommerce that ships all eight of its detection modules at no cost, with no usage cap and no trial expiry. As of version 1.3.8, the free tier scores every shopper from 0 to 100 and sorts them into six segments — VIP, Trusted, Normal, Caution, Risk, and Critical — using return patterns, order history, coupon behavior, linked accounts, shipping anomalies, chargeback history, and real-time card-testing signals. All of that runs inside your own WordPress install; no customer data is sent to a third party by default.
TrustLens
by Webstepper · Free on WordPress.org · Version 1.3.8
Freemium
All 8 detection modules, the full 0–100 trust-scoring engine, the Command Center dashboard, chargeback tracking with an auto-ingest from Stripe and WooPayments, and card-testing defense with a Panic Freeze button are all part of the free tier — not a trial, not a demo, the actual free version.
What’s genuinely free
- All 8 detection modules, no trial limits, no locked scoring
- Return abuse, coupon abuse, and linked-account detection — threats most free fraud tools ignore entirely
- Chargeback tracking with automatic Stripe/WooPayments ingestion and a dashboard ratio speedometer
- Card-testing defense with a 60-second rolling window and a one-click Panic Freeze
- No query limit, no revenue cap, no per-order fee at any volume
- All data stays inside your WooCommerce install by default
Not available free
- No auto-block. The free tier never blocks a customer automatically — every enforcement action is a manual decision. This is a deliberate design choice, covered in depth in why TrustLens Free doesn’t auto-block
- No automation rules or webhooks — trigger-based actions require Pro
- No IP geolocation or proxy/VPN detection — this isn’t part of the behavioral model in either tier
- No cross-merchant fraud network — TrustLens only knows what has happened on your own store
- Limited signal on a customer’s very first order, since there’s no history yet to score against
Best for
Stores with an established or growing repeat-customer base losing margin to return abuse, coupon exploitation, or multi-account discount rings — patterns that a per-order checkout tool can never see, free or paid. It’s a poor fit as your only defense if your fraud problem is mostly one-time stolen-card orders from customers who never come back, since TrustLens needs order history to score confidently.
FraudLabs Pro Free (Micro plan)
FraudLabs Pro’s free tier, called the Micro plan, is a per-order transaction-screening service capped at 500 API queries per month or roughly $25,000 in monthly sales, whichever comes first. Every order check on the free plan counts against that quota; once you exceed it, order screening simply stops until the next billing cycle or an upgrade.
FraudLabs Pro
by FraudLabs · Free Micro plan + paid plans from $29.95/mo
Freemium
The free Micro plan includes fraud scoring, IP geolocation validation, anonymous proxy validation, credit card validation, email validation, transaction velocity validation, device transaction validation, and blacklist validation — a genuinely capable free checkout-screening layer, within the monthly cap.
What’s genuinely free
- Real IP geolocation, proxy/VPN detection, and email domain risk scoring — on order #1, with no history required
- Shared blacklist database — a signal flagged by another FraudLabs merchant can benefit your store too
- 500 requests/month or under ~$25K/month in sales, whichever limit hits first — enough for many small stores
- Approve / Review / Reject verdict with the specific signals that fired, so free-tier review isn’t a black box
- 5 configurable validation rules included on the free Micro plan
Not available free
- Hard usage cap. Once you exceed 500 checks in a month, screening stops for every order after that until you upgrade or the month resets
- No behavioral tracking across a customer’s order history at any tier — this simply isn’t the product
- No return abuse, coupon abuse, or chargeback-tracking features on the free plan or any paid plan
- Order data (IP, email, billing/shipping, card BIN) leaves your server on every check — a factor for GDPR-conscious stores
- Deeper behavioral and anomaly-detection features are reserved for higher-priced tiers, not the free Micro plan
Best for
Small stores under roughly 500 orders a month (or under ~$25K/month in sales) who are mainly worried about payment fraud at checkout — stolen cards, proxy orders, suspicious email domains — and want a real transaction-level gatekeeper without paying anything. It stops being a “free” option the moment your volume crosses the cap, and it was never going to help with return abuse or coupon exploitation regardless of tier.
Stripe Radar (included, not really “free”)
Stripe Radar is not a plugin you install and it isn’t really “free” in the same sense as TrustLens or FraudLabs Pro’s Micro plan — it’s a fraud-screening layer that runs automatically on every transaction you process through Stripe, at no additional charge beyond your normal Stripe processing fees. If you already use Stripe for WooCommerce payments, a base level of Radar is already protecting every transaction whether you’ve configured anything or not.
It’s worth naming here because it’s the single most common “free” fraud tool WooCommerce stores already have running without realizing it. Radar catches obvious stolen-card attempts using Stripe’s own cross-merchant machine learning. It has zero visibility into behavioral abuse — a customer who returns 90% of their orders looks completely clean to Radar, because each individual transaction is legitimate. And it only covers Stripe transactions; if you also accept PayPal or another gateway, those orders get none of Radar’s protection.
Plugins that don’t belong in a free-tier list
A few names come up constantly in “WooCommerce fraud prevention” searches and deserve a direct answer here, because pretending they belong in a free comparison would be dishonest.
WooCommerce Anti-Fraud by OPMC
WooCommerce Anti-Fraud by OPMC has no free tier, no free trial, and no WordPress.org listing. As of this writing, it’s sold exclusively through the WooCommerce Marketplace at $139 for a one-year single-site license (or a discounted two-year option), backed by a 30-day money-back guarantee — verified directly at OPMC’s own product page and WooCommerce.com’s product listing. That refund window is a reasonable way to de-risk a purchase, but it is not a free tier, and this plugin does not appear in the feature matrix above for exactly that reason. For a full head-to-head on what it does once you do pay for it, see the broader fraud plugin comparison, which covers OPMC’s paid feature set against TrustLens and others.
NoFraud and Signifyd
Both are managed fraud-screening services with chargeback guarantees, and both price on a percentage of GMV with custom, sales-negotiated contracts — there’s no published free tier for either, and none is realistically expected at their target market (mid-size to enterprise stores with meaningful chargeback exposure). If your store has no budget line for fraud tools, neither is a candidate regardless of how good their guarantee is.
Which free tool fits your situation
The right free tool depends on which type of fraud is actually costing you money — not which plugin has the longer feature list.
| Your situation, with zero budget | What to install |
|---|---|
| Serial returners, coupon abusers, or customers running multiple accounts to grab repeat first-order discounts | TrustLens Free — the only tool here that tracks behavior across a customer’s order history, and it does so with no usage cap |
| Under 500 orders a month, worried mainly about stolen cards or suspicious IPs at checkout | FraudLabs Pro’s free Micro plan — real IP/proxy/email risk scoring within the free quota |
| Already using Stripe for payments | Stripe Radar is already protecting you at the transaction level — no setup needed, but it won’t help with behavioral abuse |
| Growing past 500 orders/month and still want $0 fraud tooling | TrustLens Free has no cap to outgrow. FraudLabs Pro’s free Micro plan will start rejecting checks once you exceed it |
| Both first-order payment fraud and behavioral abuse from repeat customers | Run TrustLens Free + FraudLabs Pro’s free Micro plan + Stripe Radar (if applicable) together — none of them conflict, and combined they cost nothing under the FraudLabs cap |
None of the free tools here conflict with each other. TrustLens scores customer behavior over time; FraudLabs Pro screens individual transactions; Stripe Radar runs invisibly on Stripe charges. Layering all three that apply to your store costs $0 and covers more ground than any single one alone. For a deeper look at how TrustLens and FraudLabs Pro compare beyond the free tier — including what changes once you’re paying for either — see the direct FraudLabs Pro vs. TrustLens comparison.
Key takeaways
Key Takeaways
- Only two well-known WooCommerce fraud tools have a genuinely usable free tier as of writing in 2026: TrustLens and FraudLabs Pro. Stripe Radar is included automatically with Stripe rather than installed as a standalone plugin.
- TrustLens Free ships all 8 detection modules with no usage cap — return abuse, coupon abuse, and linked-account detection are free, not Pro-gated.
- FraudLabs Pro’s free Micro plan gives real IP/proxy/email transaction screening, but it’s capped at 500 checks a month or ~$25K in monthly sales — a hard ceiling that TrustLens Free does not have.
- Neither free tool auto-blocks meaningfully at zero cost: TrustLens Free never auto-blocks by design (verified in code), while FraudLabs Pro’s free plan supports only 5 basic validation rules.
- WooCommerce Anti-Fraud by OPMC has no free tier at all — $139/year, no trial, no WordPress.org listing. It doesn’t belong in a “free” comparison and isn’t one here.
- The two free tools that do exist don’t overlap much: TrustLens catches behavioral patterns FraudLabs Pro structurally can’t see, and FraudLabs Pro catches first-order transaction risk that TrustLens can’t score without history. Running both costs nothing within FraudLabs’ free cap.
Common questions
Is TrustLens actually free, or is the free version crippled to push a Pro upgrade?
As of version 1.3.8, TrustLens Free ships all eight detection modules with no trial limits, no disabled scoring, and no locked modules — verified directly against the plugin’s readme.txt and source code. What requires Pro is the automation layer on top of detection: automation rules, webhooks, the advanced chargeback monitor page, auto-block after N lost disputes, and scheduled reports. The detection and scoring engine itself is identical in both tiers.
What happens when I exceed FraudLabs Pro’s free 500-request limit?
Based on FraudLabs Pro’s public pricing page as of this writing, once you exhaust the free Micro plan’s monthly quota, order screening stops for the rest of that billing cycle unless you upgrade. WooCommerce checkout continues to function normally — orders just aren’t being scored anymore until the quota resets or you move to a paid plan.
Can I run TrustLens and FraudLabs Pro’s free plans at the same time?
Yes. The two plugins operate independently with no shared data paths — TrustLens scores customer behavior locally, FraudLabs Pro screens individual orders via its API. Running both within FraudLabs’ free quota costs nothing and gives you coverage at two different points: FraudLabs Pro catches suspicious brand-new orders that TrustLens hasn’t had a chance to profile yet, and TrustLens catches the behavioral patterns — return abuse, coupon cycling, linked accounts — that a per-order check structurally cannot see.
Why isn’t WooCommerce Anti-Fraud by OPMC in this comparison?
Because it has no free tier. As of this writing, it’s sold only through the WooCommerce Marketplace at $139/year with no free trial and no WordPress.org listing. A plugin with no way to use it for $0 doesn’t fit a comparison that’s scoped strictly to free tiers — it’s covered instead in the broader fraud prevention plugin guide, which includes paid tools.
Does the free tier of any tool here auto-block risky customers?
Not meaningfully. TrustLens Free never auto-blocks under any condition — every enforcement action requires a human decision, confirmed by grepping the plugin’s own auto-block function, which is gated behind a Pro-only check. FraudLabs Pro’s free Micro plan supports 5 basic validation rules that can automate a verdict on an order, but the free plan’s rule capacity is limited compared to paid tiers. If automatic, hands-off blocking is a requirement rather than a nice-to-have, neither free tier fully delivers it — that capability sits behind a paid plan on both sides.
What’s the single best free option if I can only install one plugin?
It depends on which fraud is actually draining your margin. If it’s serial returners, coupon exploiters, or repeat-account discount abuse, TrustLens Free is the only tool in this comparison built for that — and it has no usage cap to outgrow. If your main exposure is stolen cards and suspicious orders from first-time buyers, FraudLabs Pro’s free Micro plan gives real transaction-level screening, as long as you’re under roughly 500 orders a month. Most stores eventually want both, since they cover different problems, but if you have to pick one, match it to the fraud pattern you’re actually seeing in your order history.
