CallFilter.app

CallFilter is a mobile application and online service designed for identifying spam and blocking unwanted calls. In late August 2024, a significant dataset was collected from the service through automated parsing techniques. The collection includes a comprehensive list of fraudulent call data that had been published on the platform. The breach consists of approximately 520,000 unique phone numbers associated with spam activity along with 1.2 million user reviews. Additionally, the data provides technical details such as telephone categories, telecom operators, and specific geographic regions linked to the callers.