A fire storm was unleashed after users started posting on Reddit about how the installer for the popular FileZilla FTP software was being tagged as adware by VirusTotal. The installer is monetized to display offers to users as they install the software. When the offers are displayed they are automatically configured to be opted into, which could lead to people installing the offer as they quickly go through the installation steps. The bundled installer has a 8/68 detections on VirusTotal, with most detecting it as an adware.
Source: https://www.bleepingcomputer.com/news/security/filezillas-use-of-bundled-offers-sparks-outrage-from-users/