Stop SDK spoofing on mobile app campaigns
SDK spoofing is the dominant mobile fraud technique, generating fake installs that are invisible to standard MMP detection and stealing CPI budget at scale.
Trusted by leading brands worldwide
SDK spoofing is the most technically advanced and most damaging mobile fraud technique
SDK spoofing accounts for 40% of all mobile ad fraud and represents the technique most likely to bypass standard MMP fraud protection. Fraudulent operators reverse-engineer the SDKs used by mobile measurement partners, including AppsFlyer, Adjust, Kochava, Singular, and Branch, and simulate the exact device-level signals that a legitimate install and app session would produce. No real device is involved, no real user downloads the app, but your MMP receives what appears to be a valid install event complete with device ID, session data, and location. The CPI is paid, the install is counted, and the fraud is invisible to standard detection.
What makes SDK spoofing so damaging is the scale at which it operates. Because no real hardware is required, a single fraud server can simulate thousands of installs per hour across multiple ad networks and campaigns simultaneously. UA managers see install volumes that appear healthy, CPI figures that look acceptable, and attribution data that seems coherent. The fraud only becomes apparent when post-install engagement is examined and the cohort shows zero retention, zero revenue, and zero real user behaviour. By then, significant budget has been spent. Tapper achieves a 90% SDK spoofing detection rate by analysing the full session lifecycle rather than relying on device signals that can be replicated.
How Tapper stops sdk spoofing on Mobile
Three steps from connection to clean data, no engineering required.
01
Connect Tapper to your MMP
Tapper integrates with AppsFlyer, Adjust, Kochava, Singular, Branch, and other MMPs to monitor the full signal chain for every install event across all UA campaigns.
02
Session lifecycle analysed for spoofing signatures
Rather than relying on device signals alone, Tapper examines the behavioural pattern of the full session: timing, event sequence, interaction variation, and session depth, to identify the signatures of spoofed installs that pass device-level checks.
03
Spoofed installs excluded before CPI is counted
Detected spoofed installs are excluded from attribution before your CPI model calculates payouts. Your install counts reflect real users and your MMP data is protected from contamination.
SDK spoofing by the numbers
Data from Tapper's platform analysis and published industry research.
40%
Of mobile ad fraud uses SDK spoofing
90%
SDK spoofing detection rate by Tapper
$10B
Lost to mobile ad fraud globally in 2023
28%
Of mobile installs are fraudulent on average
Tapper vs MMP Built-in Fraud Protection
See exactly where the gaps are, and why they matter to your bottom line.
SDK spoofing detection
Full session lifecycle behavioural analysis
Device signal matching only
Detection rate
90% SDK spoofing detection rate
Catches only device-level anomalies
Zero-device fraud coverage
Identifies installs with no real device
Cannot detect spoofing without device anomaly
CPI protection
Spoofed installs excluded before payout
Spoofed installs trigger CPI payments
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 stopping sdk spoofing on Mobile App.
MMPs use the same SDK signals to verify installs that fraudsters reverse-engineer to fake them. When the spoofed signals are accurate replications of real SDK output, a verification system based on those signals has no mechanism to distinguish real from fake. Tapper analyses the behavioural and temporal patterns of the full session, which fraudsters cannot replicate with the same fidelity.
Tapper combines device-level signal analysis with full session lifecycle behavioural scoring. Spoofed sessions, while accurate at the device signal level, lack the natural variation in interaction timing, event sequencing, and session depth that real user sessions exhibit. Tapper models these behavioural patterns and flags sessions that match spoofing signatures, even when device signals appear legitimate.
All major MMPs are vulnerable because SDK spoofing targets the attribution signal layer rather than any specific platform. AppsFlyer, Adjust, Kochava, Singular, and Branch have all published research on SDK spoofing targeting their SDKs. Tapper sits alongside your existing MMP integration and adds the behavioural analysis layer that none of them provide natively.
Other fraud types affecting Mobile App
Mobile campaigns face multiple fraud vectors. Tapper covers them all.
Stop sdk spoofing on Mobile today
Join advertisers who stopped paying for traffic that was never real. Book a demo and we will show you exactly what Tapper blocks on your account.