CM Security Master for Android review, manual and guides

by Jake Doevan - -

CM Security Master is developed by a Chinese mobile Internet company Cheetah Mobile Inc. Cheetah Mobile Inc is a leading mobile software developer in the market and has over 600 million active users. The company was founded in 2009 and since then aims to deliver leading applications for mobile users worldwide and connect its users with customizable content powered by artificial intelligence.[1]

CM security master for android review

Cheetah Mobile develops various apps including Security Master, Clean Master, CM Launcher 3D, CM Transfer, CM Security Open VPN, CM Battery, Clean Master Lite, CM Locker and many more. 

At the first sight, CM Security Master looks great and has a very decent set of features. The original CM Security application was upgraded to CM Security Master – Antivirus, VPN, AppLock, Booster by CM, Cheetah mobile. It has a traditional freemium model – the free version can be upgraded to VIP which costs $11.99 per month, $20.99 per quarter or $35.99 per year. 

The application has over 500,000,000 installs and 4.7 rating on Google Play app store. 

Test Results

Antivirus protection

CM Security Master provides very good malware detection scores. According to the independent German testing lab AV-TEST, the security application detected 100% of real-time and 100% of already seen malware samples in its latest test. However, results in previous tests were not such great. 

CM for Android security master

When it comes to web protection, the application provides a private browser called Safe Browser which protects users when they are surfing the web. However, it does not provide any browser extensions, so it is not as convenient. 

Scanning performance

In order to perform an initial scan, you have to tap the Scan button on the main screen. The scan is very informative and provides you with all of the issues in three categories, including Security, Privacy, and the Internet. Users can choose between a quick scan and a full scan. It is also possible to schedule scans daily, weekly or monthly. The application is very quick and scans take only seconds. 


Cheetah Mobile provides users with a free antivirus application called CM Security Lite – Antivirus. The application includes its’ advanced antivirus engine which demonstrates excellent malware detection results, Multi-layer protection that fixes system vulnerabilities and scans new applications, file systems, SD cards, and websites in order to protect users against malware and mobile threats. Users are also available to schedule scans. 

CM privacy features

CM Security Master’s key features are an intelligent diagnosis that includes Antivirus, Junk Clean, and Phone Booster. The antivirus protection protects your Android device against malware and other cyber threats, Junk Clean feature intelligently scans your device and removes junk files. Phone Boost, Battery Saver, and CPU Cooler optimize the performance of the devices and speeds up it.  

In addition, the application comes with Safe Connect VPN which is free and high-speed VPN, proxy and unblock solution. 

CM Security Master also secures users’ messages and provides Message Security feature which hides notifications timely in order to protect users’ privacy. 

CM privacy features

System-performance impact

In order to test the performance hit of CM Security Master, the Geekbench 4 Android benchmarking tool was used. The application demonstrated system-performance hit by about 2% while running in the background. CM Security Master has about 2.5% system-performance hit during scans. 

User interface

CM Security Master is a relatively good looking application. However, it has a user interface which is overwhelming to sort through everything the app does. The majority of features are hidden in the Menu button. The interface could be confusing and difficult to navigate. Ads in a free version also can get a bit annoying. 

CM security features

The final verdict 

CM Security Master is a great application for those, who look for a reliable malware detection, nice visuals, and VPN service. However, the paid price could be a bit expensive – $35.99 per year, since most of the Android security applications costs about $15. In addition, the user interface could be a bit difficult to navigate. 

Feature Score
Antivirus protection Inconsistency
Scanning performance Quick and smooth
Security and Privacy features A full feature set including a VPN service
System-performance impact Medium
User interface Could be difficult to navigate


About the author

Jake Doevan
Jake Doevan - Computer security guru

Jake Doe is a security expert and news editor of His major is Communication and Journalism, which he obtained from the Washington and Jefferson College.

Contact Jake Doevan
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