In 2016, attackers replaced the official Mint download with a backdoored version containing an IRC botnet. Anyone who installed it that day had their machine remotely controlled. Mint now uses GPG signatures to prevent this. Firefox sends your browsing telemetry to Mozilla by default. On a fresh Mint install, Mozilla knows which sites you visit, how long you spend, and what you search — unless you manually disable it in Firefox settings.
What they claim: Linux Mint ships with zero telemetry — no analytics, no crash reporting, no usage tracking
What we found: The 2016 ISO compromise affected Linux Mint 17.3 Cinnamon edition when attackers replaced the official ISO with a backdoored version containing an IRC backdoor. While the response was exemplary (hours to disclosure, full transparency, GPG verification added), it demonstrated supply-chain risk for community projects with limited infrastructure.
What they claim: Linux Mint's Cinnamon desktop has zero cloud integration requirements
What we found: Firefox ships as the default browser with Mozilla's telemetry enabled by default. While this is Mozilla's choice (not Mint's), users inheriting the default configuration are sending telemetry. Mint does not override Mozilla's defaults to disable this.
What they claim: Linux Mint explicitly rejected Ubuntu's Snap ecosystem for privacy and control reasons
What we found: Clem Lefebvre blocked Snap in Mint 20 because it 'installs itself without asking,' runs as root, and uses a proprietary store 'nobody can audit.' However, users can manually re-enable Snap if they choose, and some applications are increasingly Snap-only upstream, creating pressure.