Malware is software or code designed to damage, disrupt, spy, steal, or obtain unauthorized access to a device, account, or system. The term includes ransomware, spyware, trojans, worms, and other harmful programs.

Common malware types

  • A trojan pretends to be legitimate software or hides harmful behavior inside it.
  • Spyware collects information or tracks activity without the user’s informed consent.
  • Ransomware blocks data or systems and demands payment.
  • A worm spreads between vulnerable systems without the same user action required by ordinary file installation.
  • Banking malware targets credentials, one-time codes, screens, or financial transactions.

These labels can overlap. One app may spy, steal credentials, and download additional code.

How malware reaches Android

Common routes include APKs from unknown sources, fake apps, malicious links, compromised downloads, and remote-access instructions from scammers. Harm can also result from a legitimate permission granted to a deceptive app.

Keep Android, apps, Google Play Protect, and trusted security software updated. Verify the developer and requested access before installation.

What to do after a detection

Read the alert, identify the file or app, and avoid opening it again. Revoke powerful permissions, remove the item when supported by the evidence, restart, and scan again. Secure accounts separately when credentials or financial access may have been exposed.

Malware and a virus are not identical

Malware is the broad category. A computer virus is a type of malicious code that attaches to other files or programs and replicates when executed. Consumer language often uses “virus” for many kinds of malware.