Stop SDK spoofing on Google Ads
SDK spoofing generates invalid attribution events by replaying intercepted network traffic, stealing credit for installs that never happened and corrupting your Google UAC optimization data.
Advertisers and agencies using Tapper
SDK spoofing steals attribution without a real install ever occurring
SDK spoofing is among the most technically sophisticated forms of invalid mobile traffic. Bad actors intercept and analyze legitimate SDK traffic between your app and your MMP, then replay and manipulate those signals at scale to generate fake install and in-app event attributions. No real device is needed, no app is downloaded, and no user is ever acquired, yet your MMP records thousands of attributed installs that drain your Google UAC budget.
Because spoofed events are structurally identical to genuine ones, they pass the basic integrity checks built into most MMPs. The tell-tale signs are statistical rather than individual: impossibly high event frequencies from single devices, in-app event completions that precede the install timestamp, and post-install funnels that complete in seconds rather than the minutes genuine users take. Tapper's statistical anomaly engine surfaces these patterns across your install cohorts.
How Tapper stops SDK spoofing on Google
Three steps from connection to clean data, no engineering required.
01
Tapper verifies that install and in-app events carry valid cryptographic signatures from your MMP SDK, rejecting replayed or synthetically constructed postbacks that lack authentic signing.
02
Events that complete faster than device hardware permits, or that arrive in sequences impossible within a genuine user session, are flagged as spoofed regardless of their apparent structural validity.
03
Spoofed installs and events are excluded from Google Ads conversion reporting, ensuring UAC optimizes toward genuine user behavior rather than algorithmically generated attribution noise.
SDK spoofing by the numbers
Data from Tapper's platform analysis and published industry research.
15%
Of mobile ad spend affected by SDK spoofing attacks globally
0.3s
Median time for spoofed events to complete full post-install funnel
$1.6B
Annual losses attributed to SDK spoofing in app marketing
99%
Of spoofed installs pass standard MMP structural validation checks
Tapper vs Google's built-in detection
Cryptographic event validation
Verifies MMP SDK signing on every install and in-app event postback received
No cryptographic verification layer; structural validity is the only check applied
Event timing anomaly detection
Flags events completing in sub-human time sequences across full install funnels
No temporal sequence analysis across the post-install funnel is performed
Cross-cohort statistical analysis
Compares install cohorts statistically to surface spoofing patterns at the network level
Individual install evaluation only; network-level spoofing patterns go unseen
MMP integration depth
Deep API integration with raw postback data access for full event inspection
No direct MMP integration; receives only aggregated conversion summaries
Leading brands growing with Tapper
See how companies are protecting their ad budgets and improving ROI with Tapper.
40%
higher conversion rate
“When we take low-quality traffic out of the funnel before it reaches the algorithm, the campaign optimizes against cleaner signals and the efficiency comes through quickly. For AMA Nissan, that was a 40% lift in conversion rate and a lower CPA on Google, with nothing else in the setup changing. That is the kind of result we want to offer clients as a matter of course.”
Sohail Khan
Senior Performance Manager, WPP Media MENA
20%
lower CPA
Up to $50K
saved per year
“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
Frequently asked questions
Device farms require actual physical or emulated devices to run apps and generate events. SDK spoofing requires no device at all. Bad actors simply replay intercepted SDK network traffic to synthesise attribution signals. This makes SDK spoofing faster, cheaper, and more scalable for the operators behind it, and harder to detect because no anomalous device behavior is ever generated.
In most cases, no. Tapper's SDK spoofing detection works primarily at the MMP integration and postback validation layer, which does not require a new app release. For advertisers who want the highest confidence level of cryptographic event signing, Tapper does offer a lightweight in-app component, but protection begins immediately through the MMP integration alone.
Yes. Tapper attributes invalid traffic detections back to the originating network, sub-publisher, and placement where that data is available in your MMP. This means you can identify if SDK spoofing is concentrated on particular UAC inventory sources and feed that intelligence back into your campaign placement exclusions.
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