Stop ad fraud on Google Ads App campaigns
Google App campaigns span Search, Play Store, YouTube, and the Display Network simultaneously, creating a multi-surface fraud landscape that no single platform control can adequately protect. Fraudsters use fake installs, SDK spoofing, and click injection to generate the conversion signals that trigger your cost-per-install bids while delivering zero real users who will ever open your app again. Tapper validates every install and in-app event against real device behaviour so you stop paying for users who never existed.
Trusted by leading brands worldwide
App campaign fraud inflates install counts while delivering no real users
Google App campaigns automate the delivery of ads designed to drive app installs or in-app actions across multiple Google properties simultaneously. The automation that makes App campaigns efficient also makes them a prime target for install fraud, because the campaign cannot independently verify whether an install was generated by a real user who saw an ad or by a fraudulent actor who injected a fake install signal into the attribution chain. Click injection, the practice of firing a click attribution immediately before a legitimate user's organic install is recorded, allows fraudsters to claim credit for installs they had no role in generating, stealing budget without producing any incremental user acquisition.
SDK spoofing is the most technically advanced form of App campaign fraud and the hardest for Google's systems to detect. Fraudsters reverse-engineer the SDK used by your measurement partner and generate realistic-looking install and in-app event postbacks without any real device or any real user ever being involved. From Google's perspective these installs look identical to genuine ones, complete with the correct event sequences, device identifiers, and session timing. The only reliable way to detect SDK spoofing is to cross-reference the claimed install data against independent device signals that the spoofer cannot access, which is exactly what Tapper's validation layer does.
Retention fraud is a growing problem for App campaign advertisers who have moved to optimised CPM or target CPA bidding based on in-app events. Fraudsters have responded to retention-based optimisation by manufacturing fake in-app events such as registrations, tutorial completions, and even synthetic purchase events that trigger conversion bids without representing real user value. Because Google's App campaign bidding model treats these events as genuine signals, the algorithm actively allocates more budget to the fraudulent traffic sources that are generating the highest volume of fake conversions. This creates a perverse outcome where fraud is rewarded by the very optimisation system that advertisers rely on to improve efficiency.
How Tapper protects your app campaigns on Google
Three steps from connection to clean campaign data, no engineering required.
01
Validate installs against real device signals
Tapper cross-references every install attributed to your Google App campaigns against independent device fingerprinting data collected at the moment the ad was served. Installs that cannot be matched to a verified real device interaction are flagged as potentially fraudulent and held for review before they influence your bidding data or your conversion count.
02
Detect click injection and attribution fraud
Tapper monitors the timing relationship between ad clicks and install attributions. Click injection attacks produce a characteristic pattern where clicks are recorded milliseconds before install completions that have a longer typical download duration, a statistical impossibility that Tapper's detection engine identifies and flags automatically across all app campaign placements.
03
Protect in-app event bidding from fake conversions
Tapper validates in-app events submitted for conversion optimisation against the full session context of the user who performed them. Events that occur without a genuine preceding session, that fire in statistically impossible sequences, or that originate from device identifiers associated with known fraud operations are excluded from your conversion reporting before they can skew your target CPA or target ROAS bidding.
App campaigns fraud by the numbers
Data from Tapper's platform analysis and published industry research.
22%
Of app installs from paid campaigns are estimated as fraudulent
$5.4B
Lost to mobile app install fraud globally each year
68%
Of fraudulent installs involve click injection or SDK spoofing
0%
Day-30 retention rate for fraudulently acquired app users
Tapper vs Google's Built-in Detection
See exactly where the gaps are, and why they matter to your campaign performance.
Click injection detection
Yes, timing analysis identifies injection attacks across all attribution windows
No, click injection not detected by Google's attribution system
SDK spoofing detection
Yes, cross-referenced against independent device signals
No, spoofed postbacks treated as genuine installs
Fake in-app event detection
Yes, event sequences validated against real session context
No, in-app events accepted at face value from measurement partners
Install validation against real device fingerprints
Yes, every install matched to a verified device interaction
No, installs validated only through attribution partner data
Retention quality scoring for acquired users
Yes, post-install behaviour used to score install source quality
No, post-install quality not factored into fraud detection
Multi-surface App campaign coverage
Yes, Search, Play Store, YouTube, and Display all covered
Partial, detection varies by surface with no unified view
Measurement partner integration
Yes, integrates with AppsFlyer, Adjust, Kochava, Singular, and Branch
No, relies on Google's own attribution data only
Trusted by industry leaders
See how companies are protecting their ad budgets and improving ROI with Tapper.
“Tapper played a key role in improving the efficiency of Du's performance marketing activity by addressing traffic quality issues within campaigns. Following implementation, Du achieved a 13% reduction in CPA and an 8.6% increase in order rate, demonstrating a clear improvement in conversion quality and overall campaign effectiveness.”
Joseph Elbcherrawy
Client Leadership Director, Mindshare, a WPP Media Brand
“During our Tapper trial for INFINITI, we uncovered low-quality traffic that wasn't visible inside the platforms. Removing it delivered a 14% uplift in conversions and an 11.4% reduction in CPA - a meaningful efficiency gain for INFINITI's 2026 growth plans.”
David Barnes
Data & Technology Lead, Omnicom Group
“With Tapper's protection we were able to identify and block invalid clicks in real time. The impact was immediate as our cost per acquisition dropped by 30% and ROAS improved significantly. More importantly, Tapper gives us the confidence that our campaigns are reaching genuine customers, which makes it truly invaluable.”
Dimitris Bakas
Senior Performance Marketing, Public Group
“We started using Tapper to get better visibility on where our clicks were coming from, and ended up cutting wasted spend by over 12%. The performance uplift was clear, and for the first time, we could trust the numbers we were seeing. It's a total game-changer for campaign integrity.”
Stuart Parkin
Director of Operations, Regit
“Tapper's blocking technology purifies our paid media traffic which roughly equates to a 36x return against its subscription costs. It's certainly one of the easiest-to-implement tools in our entire marketing stack.”
Reno Mindemann
Head of Growth, Kama Capital
“We've been using Tapper for over a year now, and it has become a core part of how we run paid media. Invalid traffic was always something we knew existed but couldn't really act on. Tapper changed that. We're now saving up to $50K per year, and on PureSquare specifically, we saw around a 20% decrease in CPA. Based on these results, we decided to roll it out across other ventures under Disrupt as well.”
Nurkan Kirkan
GTM Consultant / Paid Growth, Disrupt.com
Trusted by leading brands worldwide
Frequently asked questions
Everything you need to know about protecting your app campaigns on Google Ads.
Click injection is a form of attribution fraud where a malicious app installed on a user's device monitors the device for app download signals and then fires a fake ad click attribution just before the install completes. The fraudster's click is recorded as the last touch before the install, allowing them to claim cost-per-install revenue from your campaign. Industry data suggests click injection accounts for between 20 and 30 percent of all attributed mobile installs from paid campaigns, and Google App campaigns are a primary target because of their scale and automated bidding.
SDK spoofing works by replicating the data structure and event sequences that a legitimate SDK would send to a measurement partner, which means the measurement partner's server-side validation sees apparently valid data. Tapper detects spoofing by requiring that attributed installs can be correlated to a real device fingerprint collected at the ad-serving stage, before the install occurs. A spoofed install has no corresponding real-device ad interaction in Tapper's records, which makes it identifiable even when the attribution data itself looks legitimate.
Yes. Google App campaigns span Search, Play Store browse, YouTube video, and Display Network placements simultaneously. Tapper attributes fraud detections back to the surface and placement where the original ad interaction occurred, giving you a breakdown of fraud rates across each component of your App campaign. This allows you to see whether, for example, your Display inventory within App campaigns has a significantly higher fraud rate than your Search inventory, and to inform Google's automated optimisation accordingly.
If Tapper identifies a significant volume of fraudulent installs, the first step is to exclude the fraudulent sources from your active campaigns using IP and placement exclusions. The second step is to file an invalid activity report with Google using the evidence that Tapper provides, which includes timestamped click logs and device fingerprint data. Google does issue credits for substantiated install fraud claims, and the detailed evidence that Tapper generates substantially improves the success rate of these claims compared to the generic reports most advertisers submit.
Tapper integrates with all major mobile measurement partners including AppsFlyer, Adjust, Kochava, Singular, and Branch. The integration allows Tapper to cross-reference its independent fraud signals against your MMP's attribution data, combining the strengths of both systems. Tapper's device-level validation adds a layer of fraud detection that no MMP can provide from attribution data alone, while your MMP's multi-touch attribution model remains intact for accurate channel credit allocation.
If you are using target CPA or target ROAS bidding based on in-app events such as registrations or purchases, fraudulent event fires from fake users train Google's algorithm to favour the traffic sources and audiences that are generating those events. Because fraudulent events cluster around specific placements and publisher apps, the bidding model learns to increase bids on exactly the sources where fraud is highest. Tapper protects your bidding strategy by excluding fraudulent events from the conversion data that feeds Google's optimisation, ensuring the algorithm is trained only on real user behaviour.
Other campaign types on Google Ads
Each campaign type has its own fraud patterns. Tapper covers them all on Google.
Stop paying for fraud on Google app campaigns
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