It’s a bigfoot virus, engineered by alien technology to infect humans. Obviously, the greys have made the first move and the human/alien war has begun. Once we break their crop circle code, we’ll know more about their strategy.
No self respecting alien bung diver, able to cross the interstellar expanse yet too frickin' stupid to find it's way to San Fransicko, will be caught coming through your bedroom walls via this camera.