New Android malware encrypts files, steals data, and harasses victims

Published September 10, 2026

A new Android malware called Mantax Otax locks your files, steals your data, and floods you with annoying messages. It works on any Android phone, not just a specific app or brand.

Report priority
High
Involves
Android

What is known

  • Attackers send a fake app or link that tricks you into installing Mantax Otax.
  • Once inside, it locks your files so you can't open them.
  • It also steals your messages, photos, and account info.
  • Then it sends you repeated spam messages to pressure you into paying.

What to do

Check your phone's installed apps for anything you don't recognize. If you see an unknown app, uninstall it immediately.

Uninstall the suspicious app right away. Do not pay the ransom, it won't unlock your files. If your data is already stolen, check if the attacker leaked it online. If you need help, contact your phone's manufacturer or a trusted tech support service.

Reported details

A victim downloads a fake game from a third-party app store. After installing it, their photos and documents get locked, and they start getting repeated text messages demanding money.

A new Android malware strain called Mantax Otax combines ransomware and spyware capabilities to encrypt files, steal sensitive data, and spam and harass victims.