Memes. They’re cute. They’re funny. And they’re infected. That’s what researchers are saying about memes posted on Twitter from a particular account. The memes had commands embedded in their code, so that to look at the meme it looked normal, but when a computer infected with the particular malware encountered the meme, it would read the command and then execute it.

“The site you are about to visit may harm your computer” warns a by-now familiar refrain from Google. And usually they have their reasons. But over the weekend, Google said that about the entire Internet. Oops.