CPA (cost per action) fraud is a type of click fraud aimed draining advertisers marketing budgets by faking actions post-app install.
What is CPA fraud?
These bad actions will either fake events manually or program bot scripts to mimic actual user behavior within the app.
How does CPA fraud work?
Fraudsters will go a long way to pass their installs as legitimate, by pretending to be engaged users post install, or aim for the bigger rewards often available in CPA-based campaigns.
They invest significant funds into studying real user behavior patterns via malicious software (aka malware) or self-operated apps, and later “teach” their bots to behave similarly in apps under their attack.