Now, I'm new here, so my opinion may not much. However, if this was a joke I beleive it was a stupid joke. Joking about a virus is not funny. People have very sensitive information on their computer(credit card numbers, bank accounts, etc.) they also have sentimental things such as photos and videos of their family. If that information were to get out then that could result in things such as identity theft among things, and you could lose the sentimental things I mentioned. You guys could have done a better April Fools joke like say you were shutting down or just Goldberg the site out.
For those of you familiar with reddit here's what a subreddit I frequent did: http://i.imgur.com/0m2GTIF.png
This is what the sub usually looks like: http://www.reddit.com/r/SquaredCircle/
A simple layout change would have done. By doing this you are freaking people out, as evidence by this sub. So if this is a joke, I encourage you to come forth and stop it.
Of course if this isn't a joke, then sorry and hopefully it gets sorted out soon.