This Canvas Virus thing is not cool. I spent a lot of time on my dumb little projects only for one press of a button to wreck it all. Stay safe guys. If you see a project that looks like this, DO NOT do what it says. Opening the backdrop editor crashes Scratch and logs you out of your account, and runs a code that replaces ALL of your shared projects with this to make the virus spread further.
It seems to only affect shared projects. My unshared projects remained unmodified, which is something to note. It infected my Boykisser Clicker though, I had to recreate that FROM SCRATCH cuz I'd literally only just finished making that
