Install Fraud
Install fraud manipulates mobile attribution data to generate fake installs, clicks, or conversions, stealing ad budget without delivering real users.
Definition
Install fraud covers a range of techniques used by bad actors to generate fraudulent attribution events and claim credit for ad spend. The most common types are click injection (malware on a device fires a fake click immediately before an organic install, hijacking credit), click flooding (bots fire millions of fake clicks to win attribution by chance), SDK spoofing (simulating installs and in-app events without any real device or user), and device farms (real devices running automated scripts to generate fake installs at scale).
Fraud is most prevalent in cost-per-install campaigns and programmatic channels where ad inventory is bought through multiple intermediaries. Networks with less direct publisher relationships and weaker fraud detection are higher risk. Gaming apps and high-CPI categories are disproportionately targeted because the payout per fraudulent install is larger.
Mobile Measurement Partners (MMPs) like AppsFlyer and Adjust have built fraud detection layers into their attribution SDKs, using behavioral analysis, device fingerprint anomalies, and install pattern modeling to flag and reject fraudulent events before they're attributed.
Why it matters
Install fraud directly inflates your CPI and misattributes budget to fraudulent sources. Without fraud protection, you might be paying for 10,000 installs and only getting 6,000 real users, with the remaining 4,000 being bots or hijacked credit. This distorts every downstream metric: your reported ROAS looks worse, your retention rates drop because fake installs never engage, and budget flows toward fraudulent sources instead of real ones.
Example
In practice
A gaming app running a $50,000 campaign through a programmatic network records 25,000 installs in AppsFlyer, but fraud detection flags 8,000 as click injection fraud. The real CPI for legitimate installs is $2.50, not the reported $2.00, and the fraudulent network gets blocked.
Frequently asked questions
How do you protect against install fraud?
Use an MMP with active fraud protection (AppsFlyer Protect360, Adjust Fraud Prevention Suite). Set post-install event requirements before paying publishers. Avoid networks that can't provide publisher-level transparency. Monitor for anomalies like unusually high CTR-to-install rates, zero-second click-to-install times, or abnormally low post-install engagement.
Is click fraud the same as install fraud?
Click fraud specifically refers to fake clicks generated to waste competitor ad spend or to fraudulently win attribution. Install fraud is broader and includes fake installs regardless of whether a click was involved. Click injection is a specific install fraud technique that uses fake clicks to hijack attribution for organic installs.