The zyto package on PyPI versions 0.2.0 through 0.2.3 contains malicious code that executes during installation by overriding the install command in setup.py. This behavior is intended to prepare for embedding a Remote Access Trojan (RAT), indicating clear malicious intent. The package has been flagged by some antivirus vendors as malicious and is part of a broader campaign identified as 2026-11-filipt.