A large-scale ad fraud operation called Trapdoor has been discovered targeting Android users through 455 malicious apps, quietly generating fake ad clicks and draining real advertising budgets across the digital ecosystem. At its peak, the operation produced 659 million fraudulent bid requests in a single day and accumulated well over 24 million downloads on affected […] The post Trapdoor Android Ad Fraud Operation Uses 455 Malicious Apps to Generate Fake Clicks appeared first on Cyber Security