The most common types of android security threats are: 
- Premium service abuse: where text messages are sent from infected phones to premium-rate telephone numbers without the consent or even knowledge of the user
- Malware: that displays unwanted and intrusive advertisements on the device, or sends personal information to unauthorized third parties
- Spyware: such as Pegasus, which can and has been used to infect both iOS and Android smartphones and can then be used to exfiltrate data, track user locations, capture film through its camera, and activate the microphone at any time.