What is the term for software obtained illegally that could potentially contain harmful malware?

The term for software obtained illegally that could potentially contain harmful malware is software piracy. This practice involves unauthorized copying, distribution, or use of software that is protected by copyright law. Software piracy poses significant risks, not only because it violates legal agreements but also because such unlicensed software often lacks the security and updates provided by legitimate sources. Consequently, these pirated versions can be a vehicle for malware, which can compromise personal data, system integrity, and overall cybersecurity.

Open-source software, freeware, and trial versions are legitimate categories of software. Open-source software is made available for anyone to use, modify, and distribute, typically with a license that encourages collaboration. Freeware refers to software that is offered without cost, but it is still distributed legally by the original creators. Trial versions are legitimate limitations of commercial software, designed to allow users to test features before purchase. These alternatives do not imply illegal acquisition and are generally safe to use if sourced from reputable developers.