MOTA Cuts CPA and Reclaims Ad Spend After Uncovering Massive Click Fraud with Spider AF

MOTA — driving DX across Japan's automotive and real-estate markets — ran an ad-fraud diagnostic expecting to find issues in social and display. Instead, the worst offender was their highest-CPC channel: search. After implementing Spider AF, MOTA recovered several thousand dollars in the first month and improved CPA across the board.

MOTA

A Toyota Group company
Industry
Automotive and Mobility Services
Channels
Mobility / Auto Subscription
Product
Region
Japan
Team
Monthly Traffic
Mobility / Auto Subscription
Multi-×
Fraud vs. expected
6-figure
Annual loss exposed
−¥3,000+
CPA reduction
−¥3,000+
CPA reduction
The Challenge

Trust in the data, not in the assumption.

MOTA wasn't searching for fraud. The team was looking for one thing — proof that the marketing data behind their growing ad spend was actually reliable. The diagnostic answered that question. Just not the way anyone expected. The data wasn't reliable. And the worst offender was the channel everyone trusted.

  • The team assumed fraud would mainly affect social media and display — both notoriously bot-heavy environments.
  • A baseline diagnostic showed click fraud levels several times higher than the working assumption — across the entire spend.
  • Critically, search ads — MOTA's most expensive per-click channel — contained a meaningful level of fraudulent clicks too.
  • Higher CPCs meant every fraudulent search click cost meaningfully more than a fraudulent display impression — quietly compounding into a six-figure annual loss.
Why Spider AF

Three differentiators after a multi-vendor evaluation.

MOTA reviewed multiple solutions, including global vendors. Spider AF won on three clearly differentiated factors.

01

Clear, actionable visibility

MOTA's marketing team didn't want to wait on a fraud analyst to interpret a report. Spider AF's dashboard surfaced source, pattern, and impact in real time — operators could act on it directly, without translation.

02

High-precision detection

MOTA's biggest fear was over-blocking. Spider AF's classifier separates fraudulent traffic from high-intent users with minimal false positives — protection that doesn't quietly cap conversion volume.

03

Live in a day, not a quarter

Seamless tag-based integration with the existing ad platforms. No engineering tickets, no internal training program. Yokoyama-san's team moved from evaluation to execution in a single afternoon.

The Result

CPA dropped the moment the bad clicks stopped counting.

MOTA didn't change campaigns, creative, or bidding strategy. Spider AF changed what the ad platform was counting as a real user — and CPA followed inside weeks, not quarters.

Indexed CPA after Spider AF activation (Month 1)

CPA (indexed, baseline = 100)
60708090100Wk 0Wk 1Wk 2Wk 3Wk 4BaselineBlocking live−¥ recovered−26%
Wk 0 — Baseline + diagnosticWk 4 — Cleaner CPA + Yahoo! Ads refund credited
The Approach

From diagnostic to recovery, inside a single month.

Spider AF starts in measurement mode — no rules active. Once the team sees the picture, blocking goes live in an afternoon, and historical losses are claimed back from the ad networks.

Step 1

Free diagnostic scan

MOTA ran a passive 7-day measurement across Yahoo! Ads, Google Search, Display and Social — no blocking yet. Spider AF surfaced the baseline invalid-click rate by channel, by campaign, by source.

Step 2

The unexpected finding

The reveal: search ads — the channel with the highest CPC and the most strategic importance — were carrying a meaningful fraud load. The team had been optimizing on poisoned data without knowing it.

Step 3

Activate blocking

A single tag deploy and OAuth into the ad accounts. Fraud blocking went live without an engineering hand-off; Spider AF's identified bot clusters auto-applied as negative-audience signals.

Step 4

File the recovery claim

MOTA used the Spider AF fraud-log export to submit a refund claim to Yahoo! Ads. Several thousand dollars in wasted spend were credited back inside the first month.

Step 5

Steady-state · cleaner data

CPA improved as Smart Bidding re-learned from real users. The marketing team now reviews Spider AF reports as part of their weekly performance review.

MOTA Cuts CPA and Reclaims Ad Spend After Uncovering Massive Click Fraud with Spider AF

MOTA — driving DX across Japan's automotive and real-estate markets — ran an ad-fraud diagnostic expecting to find issues in social and display. Instead, the worst offender was their highest-CPC channel: search. After implementing Spider AF, MOTA recovered several thousand dollars in the first month and improved CPA across the board.

Overview

MOTA Inc., a company driving digital transformation (DX) in the automotive and real estate industries, operates under a clear mission:
“Bring fair trade to people around the world.”

By improving transparency, MOTA builds platforms that empower users to make confident, informed decisions when buying and selling high-value assets.

As the company scaled, so did its advertising investment. With increasing budgets, the marketing team recognized a critical need: not just improving performance, but ensuring the accuracy, transparency, and reliability of their marketing data.

To ensure their data could support ROI-driven marketing decisions, MOTA conducted an ad fraud diagnostic using specialized ad fraud detection software.

The results were unexpected.

Click fraud levels were multiple times higher than expected, revealing a major gap in their click fraud prevention strategy. Estimated losses reached hundreds of thousands of dollars annually, with fraud even detected in search ads—one of their most important acquisition channels.

After implementing Spider AF, MOTA was able to:

  • Eliminate invalid and low-quality traffic across campaigns
  • Improve CPA through cleaner data and better marketing spend optimization
  • Recover several thousand dollars in ad spend within the first month

This case study explains how MOTA uncovered hidden inefficiencies, strengthened its marketing foundation, and achieved immediate improvements in performance and ROI.

Key Results

CategoryOutcome
Fraud DetectionMultiple times higher than initial expectations
Financial ImpactEstimated six-figure annual loss (pre-mitigation)
CPAImproved through higher-quality traffic
Cost RecoverySeveral thousand dollars recovered (first month)
ImplementationFast, simple, and low operational overhead

Company Background: Building Transparency into Complex Markets

MOTA’s mission, “Bring fair trade to people around the world”, centers on making traditionally opaque markets more transparent and user-friendly.

Core Business Areas

SectorValue Provided
AutomotiveUsers receive pre-bid offers and engage only with top buyers
Real EstateDigitized valuation and selling processes for full transparency

Yokoyama, from the Marketing Division, explains:

“As our user base grew, our ad spend increased. We realized we needed stronger discipline—not just in budget allocation, but in the transparency of that spend and the data behind it.”

At this stage, ad fraud was not seen as a major risk. Instead, the team focused on a more fundamental question:

“We wanted to confirm whether the data we rely on for decision-making was truly reliable.”

A Critical Blind Spot: Fraud in Search Ads

Before the analysis, the team assumed fraud would primarily affect:

  • Social media advertising
  • Display campaigns

However, the diagnostic revealed a critical insight:

“Even search ads—one of our largest investment areas—contained a meaningful level of fraudulent clicks.”

This finding was especially important because:

  • Search ads typically have higher CPCs
  • Fraud in these channels leads to greater financial loss per click
  • It directly impacts CPA, attribution accuracy, and campaign optimization

Why MOTA Selected Spider AF

After evaluating multiple solutions, including global vendors, MOTA selected Spider AF based on three clearly differentiated factors.

1. Clear, Actionable Visibility into Ad Fraud

One of the biggest differentiators was how easily the team could analyze and act on fraud data in real time.

“The dashboard made it easy to see where and how fraud was occurring, even without specialized expertise.”

Spider AF enabled MOTA to:

  • Instantly identify sources of invalid traffic
  • Understand fraud patterns and their impact on performance
  • Share insights across teams without technical barriers

This removed the “black box” nature of fraud detection and turned it into a practical, data-driven workflow for ongoing optimization.

2. High-Precision Detection That Protects Performance

For MOTA, effective click fraud prevention needed to balance protection with performance.

“We were concerned that blocking fraud might also reduce real conversions. Spider AF gave us confidence that this risk was minimized.”

Spider AF delivered:

  • Accurate identification of fraudulent vs. legitimate traffic
  • Minimal false positives
  • Protection of conversion volume and high-intent users

This ensured that performance gains came from higher-quality traffic—not reduced reach, supporting sustainable and scalable ROI marketing.

3. Fast Implementation with Immediate Business Impact

Speed and ease of adoption were also key decision factors.

Spider AF provided:

  • Seamless integration with existing ad platforms
  • No complex setup or engineering dependency
  • Immediate usability with minimal training
“We were able to start quickly and without confusion.”

This allowed MOTA to move quickly from evaluation to execution, achieving measurable ROI in a short timeframe without adding operational burden.

Immediate Impact: Improved CPA and Campaign Efficiency

The impact of implementation was visible almost immediately.

“From the first month, fraud blocking was clearly working, and we saw improvements in campaign performance.”

By filtering out invalid traffic:

  • Campaign data became significantly more reliable
  • Marketing spend was reallocated toward high-quality users
  • CPA improved as overall efficiency increased

This created a stronger foundation for ongoing optimization and marketing spend optimization.

Recovering Ad Spend: Turning Losses into Measurable Returns

Beyond prevention, Spider AF enabled direct recovery of wasted budget.

Using fraud logs generated by the platform, MOTA submitted a claim to Yahoo! Ads.

“We recovered several thousand dollars in the first month.”

This had a strong internal impact:

“It wasn’t just about preventing future losses. We were also able to recover past losses. That made the value very clear, even to management. We honestly felt we should have implemented it sooner.”

Key Insight: Click Fraud Is Widely Underestimated

MOTA’s experience highlights a broader industry challenge:

  • Click fraud is often significantly underestimated
  • High-value channels like search are not immune
  • Data quality directly impacts ROI, attribution accuracy, and optimization decisions

Who Should Prioritize Ad Fraud Protection?

Yokoyama shares:

“Ideally, all companies should take action. If ad fraud becomes unprofitable, the entire ecosystem improves.”

However, priority should be given to:

  • Businesses with high CPC campaigns
  • Companies heavily reliant on search advertising
“Protecting high-cost traffic is the most effective first step in preventing losses.”

Looking Ahead

MOTA plans to further strengthen its marketing by leveraging clean, reliable data.

“By improving transparency, we aim to create an environment where users can make confident decisions.”

By continuing to improve data quality, the company aligns its marketing strategy with its broader mission of enabling fair and transparent transactions.

Run a Free Ad Fraud Diagnostic

Many companies underestimate the scale of click fraud - until they measure it.

With Spider AF, you can:

  • Identify invalid and fraudulent traffic
  • Quantify wasted ad spend
  • Improve CPA through better marketing spend optimization

👉 Start your free Spider AF trial today