Cheetah Mobile's Security Master Receives Perfect Score in Latest AV-TEST Evaluation

Oct 30, 2017

SAN FRANCISCO, Oct. 30, 2017 /PRNewswire/ -- Cheetah Mobile Inc. (NYSE: CMCM), the leading developer of mission-critical mobile utility and security applications, today announced that its flagship privacy protection and antivirus app Security Master (formerly CM Security) has earned a perfect score in the latest evaluation by AV-TEST, a leading independent international IT-security institute.

Throughout September 2017, AV-TEST evaluated 21 mobile security products for Android using their default settings. Security Master scored a perfect 6/6 in the Protection category for its ability to protect against malicious malware attacks. The app also scored a perfect 6/6 in the Usability category, which evaluates the impact of the security software on the usability of the device.

"We are 100% dedicated to ensuring that Security Master offers the highest level of security protection without affecting performance," said Jill Shih, Vice President of Product & User Experience at Cheetah Mobile. "These results show that we strike the perfect balance between protection and usability, and we are excited to carry this momentum forward as we continue to improve our security software."

For the Protection evaluation, Security Master was tested on its ability to detect 3,016 of the latest Android malware in real time and 2,917 of the latest Android malware discovered in the last 4 weeks. Security Master detected 100% of threats, beating the industry average in both tests.

For the Usability evaluation, AV-TEST confirmed that Security Master does not impact battery life, the app does not slow down the device during normal usage, and the app does not generate too much traffic. The test also showed that Security Master did not generate any false warnings during installation and usage of legitimate apps or software from the Google Play Store.

The AV-TEST Institute is an independent research institute that provides comparative tests and reviews for antivirus software, antimalware tools, and security software for Windows, Mac, and Android.

About Cheetah Mobile

Cheetah Mobile is a leading mobile internet company dedicated to making the world smarter. It aims to provide leading apps for mobile users worldwide and connect users with personalized content powered by artificial intelligence.

Cheetah Mobile's products, including its popular utility applications Clean Master, Security Master, and Cheetah Keyboard, help make users' mobile internet experience smarter, speedier, and safer. As of June 2017, the Company has attracted approximately 580 million global Mobile MAUs, of which approximately 77% are located outside of China.

Leveraging the success of its utility applications, Cheetah Mobile has launched its line of mobile content-driven applications, which include, News Republic, and popular casual games, such as Piano Tiles 2, Rolling Sky, and Dancing Line. The Company is also an investor in OrionStar, an artificial intelligence company dedicated to developing the next generation of ground-breaking technology products and freeing people from the burden of overly complicated tasks.

Cheetah Mobile provides its advertising customers, which include direct advertisers and mobile advertising networks through which advertisers place their advertisements, with direct access to highly targeted mobile users and global promotional channels, which are capable of delivering targeted content to hundreds of millions of users. For more information about Cheetah Mobile and its products, please visit

SOURCE Cheetah Mobile

For further information: Josh Ong, +1 (415) 684-3947,