The person posting about a RAT is either unwell or trolling, dumping paragraphs of nonsense and screenshots that don’t actually show anything. Don’t let it get to you.
You can run ClamAV if you feel you need to, it’s fine. Install packages using your distro’s package manager. Don’t install random binaries or package repositories until you understand where the software is actually coming from. Job done.




Ubuntu configures systemd-tmpfiles to delete a snapd tmp dir, snapd runs setuid root and blindly trusts/executes files from a tmp dir it does not manage the life cycle of. Where is the flaw in systemd here?