The original CM Security upgraded to the whole new Security Master Antivirus&VPN(by CM, Cheetah Mobile) and redefined the scalp of Phone Security: protects not only your phone but also your privacy. Instead of providing all the popular features, Security Master Antivirus&VPN(by CM) introduced Intelligent Diagnosis to detect your phone status and advise needed solution, including Antivirus, Junk Clean, and Phone Booster (Battery Saver, and CPU Cooler) in time. Furthermore, we strengthened the protection of privacy by creating a shield for all online activities through SafeConnect VPN.

★SafeConnect VPN
Security Master Antivirus&VPN(by CM) presents the most easy-to-use free VPN, proxy & unblock solution. Apart from other VPN, SafeConnect VPN partners with “Hotspot Shield Free VPN Proxy” and was designed for everyone. SafeConnect VPN establishes a secured cyber environment as you need to block out hackers. With SafeConnect VPN, you can apply virtual location to enhance security and freely access favorite contents. Security Master Antivirus&VPN(by CM) now protects not only your device, but the protection extends to online data transmission to prevent leak of online banking information, private messages, and browsing history. (Will be available worldwide soon.)

★Intelligent Diagnosis
Our famous big button design upgraded to intelligently diagnose your most needed solution. All solutions to keep your phone safe, clean, and optimized like a new one, including battery.

Antivirus - Security Master Antivirus&VPN(by CM) equips the certified #1 antivirus engine. It detects 100% of virus & malware by customized scan and removes virus & malware. It protects phone and also your personal information against malware, spyware, and hackers.

Junk Clean - Phone stores junk files automatically from time to time. Security Master Antivirus&VPN(by CM) detects this issue and frees storage when needed. One tap to clean cache & junk files at once. The smartest way to clean and optimize phone. 

Phone Boost, Battery Saver, and CPU Cooler - Your phone can not have the best performance if it stays at a high temperature or high memory usage. Especially when charging battery and playing games, it watches out phone & battery and keeps your phone cool, fast, and saves more battery life.

★Message Security
Worry about others peeping your message notifications? Security Master Antivirus&VPN(by CM) hides notifications timely to protect your privacy by Message Security. It gathers all chat notifications into one and makes them easier to read & manage.

★AppLock
Security Master Antivirus&VPN(by CM) protects the privacy of apps by AppLock. You can lock anything you want to protect, such as Bluetooth & Wi-Fi switches, incoming calls, recent apps, settings, photos, WhatsApp, or any apps you choose. Furthermore, the preview of notifications can be also locked so that no one can see which apps you are using or who you are chatting with.
With Applock, you can lock apps with a pattern, PIN code, or fingerprint. Fingerprint lock is supported on Samsung or Android devices 6.0 and above that are equipped with fingerprint sensors. You can also customize the re-lock time to re-lock at device screen off so that no need to unlock each time you launch an app.
Intruder Selfie - Security Master Antivirus&VPN(by CM) protects apps privacy from snoopers. If someone tries to unlock your app with a wrong password, the photo of the intruder will automatically be taken and the intruder alert will be sent to you by e-mail. It keeps your phone safe and further tells who the intruder is.
Disguise cover - Security Master Antivirus&VPN(by CM) disguises lock screen so that no one is aware of you are using AppLock while keeping your secret & privacy safe. You can protect your privacy without your parents, partner, or children knowing.
Theme - You can choose style of lock screen from hundreds of AppLock themes or customize with your photos.

Size: 18.6MB
Version: 4.1.5
Developed By: Cheetah Mobile ( Privacy Policy  Click to see complete result in a new window )
Application Permissions: ( Help me understand what permissions mean )
DOWNLOAD_WITHOUT_NOTIFICATION
Write data to internal storage
Allows an application to read (but not write) the user's browsing history and bookmarks
Allows an application to write (but not read) the user's browsing history and bookmarks
Access coarse (e.g., Cell-ID, Wi-Fi) location
Monitor, modify, or abort outgoing calls
PowerManager WakeLocks to keep processor from sleeping or screen from dimming
Access information about Wi-Fi networks
Manage the list of accounts in the AccountManager
Allows an application to receive messages via Google Cloud Messaging
Clear the caches of all installed applications on the device
Disable the keyguard
PACKAGE_USAGE_STATS
Find out the space used by any package
Allows sending in-app billing requests and managing in-app billing transactions
Change Wi-Fi connectivity state
Open network sockets
Get information about the currently or recently running tasks: a thumbnail representation of the tasks, what activities are running in it, etc
com.google.android.gms.permission.ACTIVITY_RECOGNITION
Read the user's contacts data
Initiate a phone call without going through the Dialer user interface for the user to confirm the call being placed
Access the flashlight
Access the list of accounts in the Accounts Service
Read SMS messages
Discover and pair bluetooth devices
Expand or collapse the status bar
Open windows using the type TYPE_SYSTEM_ALERT, shown on top of all other applications
Get notified that the operating system has finished booting
Write to external storage
Access fine (e.g., GPS) location
Allows an application to uninstall home screen shortcuts
Access information about networks
Write (but not read) the user's contacts data
Collect battery statistics
Allows installation of home screen shortcuts
com.google.android.providers.gsf.permission.READ_GSERVICES
Monitor incoming SMS messages, to record or perform processing on them
Send SMS messages
Write SMS messages
Allows an application to read device settings
Monitor incoming WAP push messages
WRITE_CALL_LOG
Access the vibration feature
com.android.launcher3.permission.READ_SETTINGS
Allows termination of background processes
com.android.launcher3.permission.WRITE_SETTINGS
READ_CALL_LOG
Request authtokens from the AccountManager
Change network connectivity state
Required to be able to access the camera device
Modify global audio settings
Connect to paired bluetooth devices
Read from external storage
Read only access to device state
Read or write the system settings
Allows an application to read or write the system settings
One or more permissions that have no effect because they are no longer supported in Android.
Minimum Operating System: Android 5.0
Approximate Download Time: Less than 3 minutes