  Due to the continuous improvement of performance and functions, Android
remains the most popular operating system on mobile phone today. However,
various malicious applications bring great threats to the system. Over the past
few years, significant changes occured in both malwares and counter measures.
Specifically, malwares are continuously evolving, and advanced approaches are
adopted for more accurate detection. To keep up with the latest situation, in
this paper, we conduct a wide range of analysis, including latest malwares,
Android security features, and approaches. We also provide some finding when we
are gathering information and carrying on experiments, which we think is useful
for further researches and has not been mentioned in previous works.
