Trustlook discovered 25,936 malicious apps based on the App Insights that scans for apps around the world and provides 80 pieces of information for each app, including permissions, libraries, network activity, and risk score. All the identified malicious apps having risk score 7, it might do things like capturing pictures and audio when the app is closed or making unusually large amount of network calls. The Cambridge Analytica data-gathering scandal is mainly due to the developers that associated with the Facebook Login feature.”]
Source: https://gbhackers.com/25936-malicious-apps-facebook/