Hi, here you can download APK file "Security Master" for free, apk file version is 4.3.8 to download to your android just click this button. It's easy and warranty. We provide only original apk files
Screenshosts of Security Master
Description of Security Master - Antivirus, VPN, AppLock, Booster

The original CM Security upgraded to the πŸ†• Security Master - Antivirus, VPN, AppLock, Booster (by CM, Cheetah Mobile) and redefined the scope of Phone Security: protects not only your phone but also your privacy. Security Master introduced Intelligent Diagnosis to detect your phone status, including Antivirus, Junk Clean, and Phone Booster (Battery Saver, and CPU Cooler) in time. With our upgraded Safeconnect VPN & proxy you can also unblock all your favorite websites whenever and wherever you want. All the necessary features to keep your phone safe & healthy.

Security Master Key features:

πŸ’Ž Intelligent Diagnosis - Antivirus, Junk Clean, and Phone Booster
Our famous big button design upgraded to intelligently diagnose your most needed solution.
Antivirus – 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, optimize phone performance and speed up phone.

πŸ“‘ SafeConnect VPN
Security Master (by CM) presents free and high speed VPN, proxy & unblock solution. With SafeConnect VPN, you can bypass firewalls and freely access sensitive websites , watch videos not available in your country anonymously without being tracked. Use our proxy server to hide your IP address and apply virtual location, protect your online activities to prevent leak of online banking information, private messages, and browsing history. One touch to connect to VPN! No registration required!

βœ‰οΈMessage Security
Message Security (by CM) hides notifications timely to protect your privacy. It gathers all chat notifications into one and makes them easier to read & manage.

πŸ”’AppLock
AppLock - Lock Bluetooth & Wi-Fi switches, incoming calls, apps, photos, or any private data with a pattern, PIN code, or fingerprint.
Intruder Selfie - Take photo of intruders who trying to break in your phone. AppLock feature protects apps privacy from snoopers. (Intruder Selfie for phone luck screen needs device administrator permission)
Disguise cover - Disguises lock screen so that no one is aware of you are using AppLock while keeping your secret & privacy safe.

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

Version history Security Master
New in Security Master 4.5.3
? Optimized Notification Cleaner feature. One click, clean all the unwanted notifications!
? Use newly upgraded Game Boost, double the fun!
? Performance improvements.
New in Security Master 4.5.1
? Upgraded Security Master interface, made it much easier to navigate and find what you want.
? Fixed AppLock error. Lock your apps to protect your privacy with pin, pattern or fingerprint.
? Bug fixed.
New in Security Master 4.4.7
? Yes we have upgraded the AppLock feature again and fixed some minor errors. Try it and tell us what do you think!
? Like to play games but get stuck often? Try the powerful Game Boost to get best gaming experience!
? Performance improvements.
New in Security Master 4.4.3
√ Upgraded game boost feature. Make your favorite games run faster with Security Master game boost!√ Fixed the Notification Cleaner issue. Hide unnecessary notifications and manage them at your will!√ Performance improvements. Enjoy high speed cleaning and antivirus service!
New in Security Master 4.4.2
First we want to thank all the users who have sent feedback. Only with your help could we finally fix bugs and upgrade Security Master :)1. FREE and stable VPN for you. Use security master VPN to unblock & access any websites you want without being tracked.2. Oh, don't forget to put all your favorite games into Game Boost folder. Let Security Master help you to speed up your games.Any problem, please send us feedback (with screenshots if you could), via Security Master, Menu, Feedback.
New in Security Master 4.4.0
1. Get ad-free service with low price!2. Optimized VPN service, get more free VPN here!3. Upgraded user service. You could directly send email to securitymaster@cmcm.com. We'll deal with all your reported problems!
New in Security Master 4.3.9
1.Enhanced Game Booster feature to make your games run faster.2.Optimized Charge Master design so you can better monitor your charging status.3.Bug fixes.
New in Security Master 4.3.7
Some powerful features added which require additional permissions to make your phone safer.1.New way to fully protect your privacy (require Calendar permission)2.Add Call Recorder feature (require Microphone permission)3.More personalized settings to beautify your phoneNone of your personal info will be collected per the Privacy Policy.New features are only accessible to some users now, welcome to contact us to try it in advance.
New in Security Master 4.3.6
Some powerful features added which require additional permissions to make your phone safer.1.New way to fully protect your privacy (require Calendar permission)2.Add Call Recorder feature (require Microphone permission)3.More personalized settings to beautify your phoneNone of your personal info will be collected per the Privacy Policy.New features are only accessible to some users now, welcome to contact us to try it in advance.
New in Security Master 4.3.5
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.3.4
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.3.3
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.3.2
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.3.1
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.3.0
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.2.9
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.2.8
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.2.7
1. AppLock- A new use for fingerprint locks2. Added sharing of your favorite AppLock themes to your friends3. Added screen protection button to Private Browsing, to prevent accidental taps when watching videos
New in Security Master 4.2.4
- [Message Security] Enhanced message reading experience! Message notification(s) are now sorted by app contacts; get a quick & easy glimpse of all the messages from an individual contact or a chat group- Bug fixes
New in Security Master 4.2.3
+ [Scan] Improved real-time protection to ensure device safety+ [MemeCatcher] Added 'Hi' tag to easily start a new conversation! Share the latest GIF's & Memes+ Bug fixes
New in Security Master 4.2.2
+ [SafeConnect VPN] Enjoy free & secure VPN with an added option to choose your most preferred server+ [MemeCatcher] Enable 'Auto sending mode' & share GIFs, Memes or pictures to your WhatsApp contact with a single tap (Will soon support other IM apps)+ [Battery Saver] Improved performance to ensure that the device battery will last longer
New in Security Master 4.2.1
+ [Message Security] Tired of frequently unlocking Message Security but worried about the notification privacy? Set the lock frequency for easy usage+ [MemeCatcher] Auto-collect all the GIFs from device gallery into a folder to easily locate & add GIFs in your collection+ [Notification] Added notification toolbar to quickly access the functions
New in Security Master 4.2.0
+ [Message Security] Hide app icon on notifications to ensure complete security when using sensitive app(s)+ [Disguise cover] Added fingerprint option to easily remove the disguise cover+ [MemeCatcher] Easily add or remove memes to your personal collection panel
New in Security Master 4.1.9
+ [Message Security] Quickly enable/ disable message preview with a simple toggle bar in Message Security main page+ [SafeConnect VPN] Want to earn some extra free VPN data? Watch a sponsored video & collect free VPN data+ [MemeCatcher] Added a new function "MemeCatcher" to help you collect & share memes easily (Available in U.S.A & Taiwan)
New in Security Master 4.1.8
1. You can lock your incoming calls with AppLock now on Android 5.0+/6.0+2. New feature: Check the safety of shopping websites using Private Browsing
New in Security Master 4.1.8
+ [Disguise Cover] Added Intruder Selfie. You can now trick intruders with a fake cover and snap photos of them when they fail 2 unlock attempts+ [SafeConnect VPN] Improved VPN stability to boost VPN experience+ [Scan] Optimized scan process to ensure safety from new malwares
New in Security Master 4.1.7
+ [Disguise Cover] Added new option to remove Disguise Cover. You can now 'Triple tap' or 'Long press' to remove.+ [SafeConnect VPN] VPN function is now available in all countries! (Except China due to restriction).+ [Message Security] Improved the performance of heads-up mask to prevent privacy leak
New in Security Master 4.1.6
+ [AppLock] Now set 'Disguise Cover' without enabling AppLock. No more hassle of unlocking.+ [Message Security] Easily read the long messages directly on the Message Security page+ Fixed bugs
New in Security Master 4.1.5
+ [Phone Boost] Added 1-tap Boost, as requested by various users+ [Safe Browsing] Added SafeConnect VPN shortcut on Safe Browsing page, so you can easily enable VPN connection to enhance browsing security
New in Security Master 4.1.4
+ [SafeConnect VPN] Added important tips to help users understand the benefits of VPN & provide a smooth onboarding experience+ [Message Security] Improved UI design, the new & old message(s) are now sorted by its associated app for a better user experience
New in Security Master 4.1.3
+ [SafeConnect VPN] VPN function is now available in 34 countries+ [Safe Browsing] Improved UI design for better browsing experience
New in Security Master 4.1.2
+ [AppLock] Shake your device to quickly change the lock screen background(Currently supports Samsung devices with Android Version 5.0 & above. Will soon support all the devices)+ [SafeConnect VPN] Customize 'Easy Connect' notification toggle to display when VPN is connected
New in Security Master 4.1.1
+ [Message Security] Improved UI to easily identify the new message(s)+ [SafeConnect VPN] Optimized VPN stability
New in Security Master 4.0.3
+ [AppLock]: Added option to turn OFF pop-up message(s) when screen is off to prevent private chats from being exposed+ [SafeConnect]: New intuitive UI for better user experience+ [SafeConnect]: Added 'Create shortcut' option to use VPN function easily
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