Security Master - Antivirus, VPN, AppLock, Booster Application icon

Security Master - Antivirus, VPN, AppLock, Booster 5.1.8

24.5 MB / 500M+ Downloads / Rating 4.7 - 25,575,600 reviews


See previous versions

Security Master - Antivirus, VPN, AppLock, Booster, developed and published by Cheetah Mobile (AppLock & AntiVirus), has released its latest version, 5.1.8, on 2022-12-02. This app falls under the Tools category on the Google Play Store and has achieved over 500000000 installs. It currently holds an overall rating of 4.7, based on 25.575.600 reviews.

Security Master - Antivirus, VPN, AppLock, Booster APK available on this page is compatible with all Android devices that meet the required specifications (Android 4.0+). It can also be installed on PC and Mac using an Android emulator such as Bluestacks, LDPlayer, and others.

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App Screenshot

App Screenshot

App Details

Package name: com.cleanmaster.security

Updated: 1 year ago

Developer Name: Cheetah Mobile (AppLock & AntiVirus)

Category: Tools

New features: Show more

App Permissions: Show more

Installation Instructions

This article outlines two straightforward methods for installing Security Master - Antivirus, VPN, AppLock, Booster on PC Windows and Mac.

Using BlueStacks

  1. Download the APK/XAPK file from this page.
  2. Install BlueStacks by visiting http://bluestacks.com.
  3. Open the APK/XAPK file by double-clicking it. This action will launch BlueStacks and begin the application's installation. If the APK file does not automatically open with BlueStacks, right-click on it and select 'Open with...', then navigate to BlueStacks. Alternatively, you can drag-and-drop the APK file onto the BlueStacks home screen.
  4. Wait a few seconds for the installation to complete. Once done, the installed app will appear on the BlueStacks home screen. Click its icon to start using the application.

Using LDPlayer

  1. Download and install LDPlayer from https://www.ldplayer.net.
  2. Drag the APK/XAPK file directly into LDPlayer.

If you have any questions, please don't hesitate to contact us.

App Rating

4.7
Total 25,575,600 reviews

Reviews

3 ★, on 2019-08-25
Have used this for 3 years or so and always happy for the CPU cooldown function but now it suddenly stop. I can scan cpu and get heat result but then i cannot select and press optimize so it closes apps..it now showes up to 100+ apps when scan and before i had around 5-20 maximum :S

1 ★, on 2019-08-25
I loved the first version of this app but now this app purposefully slows your device so you have to open the app. This is such a stupid way of going ad sence.

3 ★, on 2019-08-10
The app works great in clearing up space, closing background apps, and virus scanning; my only issue is since the update last week, whenever I connect to Wi-Fi, the VPN won't or cannot connect automatically. But when I connect to the VPN servers manually, I am unable to access the internet. I am a VIP member as well, if that has any bearing. Any suggestions or tips would be greatly appreciated!

3 ★, on 2019-08-08
This app would get my five stars, but recently the VPN is not working. I went as far as to uninstall and reinstall the app to see if it's a glitch, it started working the night and next day when I tried testing it out on safe browsing it disconnected. I am also a VIP member, so I need answers, because I rely on this for some of my apps.

5 ★, on 2019-08-08
Fixes viruses that can harm your device and protects your phone from future viruses and it has applock to protect your privacy to prevent people from accessing your phone and it also include the anti theft alarm!! It guards and protects your private info!!! After this clean, I feel very safe in my phone!!! Overall: THE BEST!! and it is FREE!!

5 ★, on 2019-08-28
I wish it would stay active is there any way to make it work all the time with out having to go to it bc I can literally turn my phone off and when I turn it back on everything is open for anyone to get to

Previous Versions

Security Master - Antivirus, VPN, AppLock, Booster 5.1.8
2022-12-02 / 24.5 MB / Android 4.0+

Security Master - Antivirus, VPN, AppLock, Booster 5.1.7
2020-05-25 / 23.7 MB / Android 6.0+

Security Master - Antivirus, VPN, AppLock, Booster 5.1.7
2020-05-25 / 23.7 MB / Android 6.0+

Security Master - Antivirus, VPN, AppLock, Booster 5.1.7
2020-05-25 / 23.7 MB / Android 5.0+

Security Master - Antivirus, VPN, AppLock, Booster 5.1.7
2020-05-25 / 23.7 MB / Android 5.0+

Security Master - Antivirus, VPN, AppLock, Booster 5.1.6
2020-05-25 / 23.7 MB / Android 6.0+

Security Master - Antivirus, VPN, AppLock, Booster 5.1.4
2020-05-25 / 23.1 MB / Android 6.0+

Security Master - Antivirus, VPN, AppLock, Booster 5.1.4
2020-05-25 / 23.1 MB / Android 6.0+

Security Master - Antivirus, VPN, AppLock, Booster 5.1.4
2020-05-25 / 23.1 MB / Android 5.0+

About this app

The original CM Security upgraded to the Security Master and redefined the scope of Phone Security: protects not only your android phone but also your privacy.

More than a simple antivirus for android, Security Master is built with more powerful feature, including:
★Intelligent Diagnosis - Antivirus, Junk Clean, Phone Booster, Battery Saver, CPU Cooler
★SafeConnect VPN – fast secure VPN proxy
★Wi-Fi security - scan Wi-Fi networks for threats
★Anti-Theft Alarm – protect your phone from theft by sounding an alarm
★Message Security – hide notifications preview
★Applock – lock and protect apps with a password
★Intruder Selfie - capture intruder using your phone

Key Features:
Intelligent Diagnosis
Antivirus - Security Master, a free antivirus for android, keep your phone and privacy safe from virus & malware with #1 antivirus engine.
Junk Clean - Intelligently scan and remove junk files including system and app caches with just one tap.
Phone Boost, Battery Saver, and CPU Cooler - Remove background apps that take high memory usage, overheat and drain battery.

SafeConnect VPN
Bypass firewalls and freely access sensitive websites, watch videos not available in your country anonymously without being tracked.
Hide IP address and apply virtual location, protect your online activities to prevent leak of online banking information, private messages, and browsing history.

Wi-Fi security
Security Master detects and identify phishing Wi-Fi network, test network speed and protect phone's online safety.

Anti-Theft Alarm
Anti-Theft Alarm protect your phone from theft by sounding an alarm when someone moves your phone.

Message Security
Message Security hides notifications preview timely to protect your privacy. It gathers all chat notifications into one and makes them easier to read & manage.

AppLock
Lock Bluetooth & Wi-Fi switches, apps, photos, or any private data with a pattern, PIN code, or fingerprint.

With Security Master, a free antivirus for android, protect your phone from viruses and malware. Keep your privacy safe with Applock, SafeConnect VPN, Wi-Fi Security and more features.

Terms of service: https://goo.gl/AidoF8
Privacy Policy: https://goo.gl/ec3pN2
AdChoices: https://goo.gl/qrzoXV
Security Master has used ACCESSIBILITY SERVICE.

New features

We are always working to improve Security Master performance and user experience.
Because of you, we are getting better.
- More powerful scanning and antivirus engine
- Optimize product speed and performance
- Fix some known bugs
You can:
🛡️ Get the most advanced antivirus service here!
🎮 Use Game Booster to speed up your games and get better ranking!

App Permissions

Allows an app to create windows using the type TYPE_APPLICATION_OVERLAY, shown on top of all other apps.
Allows applications to open network sockets.
Allows an application to write to external storage.
Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.
Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.
Allows applications to access information about networks.
Allows applications to access information about Wi-Fi networks.
Allows applications to change network connectivity state.
Allows applications to change Wi-Fi connectivity state.
Required to be able to access the camera device.
Allows an application to modify global audio settings.
Allows access to the vibrator.
Allows an application to read or write the system settings.
Allows an application to collect battery statistics
Allows an application to write the user's contacts data.
Allows access to the list of accounts in the Accounts Service.
Allows an app to access approximate location.
Allows an app to access precise location.
Allows applications to connect to paired bluetooth devices.
Allows applications to discover and pair bluetooth devices.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
This constant was deprecated in API level 21. No longer enforced.
Allows an application to find out the space used by any package.
Allows an application to clear the caches of all installed applications on the device.
Allows an application to call killBackgroundProcesses(String].
This constant was deprecated in API level 8. The restartPackage(String] API is no longer supported.
Allows an application to read the user's contacts data.
Allows an application to expand or collapse the status bar.
Allows applications to disable the keyguard if it is not secure.
Marker permission for applications that wish to access notification policy.
Allows an application to collect component usage statistics
Declaring the permission implies intention to use the API and the user of the device can grant permission through the Settings application.
Allows applications to set the wallpaper.
Allows an application to record audio.
Allows an application to read from external storage.
Allows an application to delete packages.
Allows an application to request deleting packages.
Allows an application to request installing packages.
Allows an app to use fingerprint hardware.