Security Master

Security Master APK 4.5.5 Free Download Editors' Choice


Updated: May 17, 2018


You are about to download the Security Master 4.5.5 apk file for Android 6.0 and up: Detect threats and clean junk files in just 5 seconds. It could also protect private messages, identify unknown callers ...

Please note that the Security Master apk file v4.5.5 is the original apk file obtained from the official Google Play server. It DOES NOT contain any mod, cheat, crack or unlimited gold patch. You could now read more about Security Master app, review app permissions or choose a server to download it.

Security Master APK

Security Master version 4.5.5 release notes:

  1. 🌟 Yes we have upgraded the AppLock feature again and fixed some minor errors. Try it and tell us what do you think!
  2. 🌟 Like to play games but get stuck often? Try the powerful Game Boost to get best gaming experience!
  3. 🌟 Performance improvements.

Download Security Master apk 4.5.5 for Android 6.0 and up:

APK file info >

• APK file:

• App permissions: review app permissions

• Signature: apk file signature & certificate info

• Size: 24277468 bytes (23.15 MB)

• MD5: 6E0F930DA7E4CEFEA604E451FE5C5C4C

• SHA1: 5E7F5EA74FC6FA42E346F7742B32D281E29FA317

Download server locations >

Security Master is a free and useful Tools app by Cheetah Mobile (AppLock & AntiVirus): The original CM Security upgraded to the 🆕 Security Master - Antivirus, VPN, AppLock, Booster (by CM, ... Read more >

After you get the Security Master 4.5.5 apk file (, move it to your Android phone's SD card and then your file manager to browse, install & enjoy it.

Google Play and the Google Play logo are trademarks of Google Inc. Security Master ( is the trademark of the developer Cheetah Mobile (AppLock & AntiVirus). All apk files on APK4Fun are only for home or personal use.

Other apk options for Security Master (Version History)

There is a newer version of Security Master available. Get the latest apk file now:

  1. Security Master 4.6.3 APK (Updated: July 13, 2018)
  2. Security Master 4.6.2 APK (Updated: July 4, 2018)
  3. Security Master 4.6.1 APK (Updated: June 28, 2018)
  4. Security Master 4.6.0 APK (Updated: June 21, 2018)
  5. Security Master 4.5.8 APK (Updated: June 7, 2018)
  6. Security Master 4.5.7 APK (Updated: May 30, 2018)
  7. Security Master 4.5.6 APK (Updated: May 21, 2018)
  8. Security Master 4.5.4 APK (Updated: May 11, 2018)
  9. Security Master 4.5.2 APK (Updated: April 28, 2018)
  10. Security Master 4.5.1 APK (Updated: April 24, 2018)

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