Message from Linden Lab while logging on Hydrastorm

I just now got that too, came here looking to see if anyone else did. Gave me a bit of a scare to be honest; I only use Hydrastorm to rip stuff that I bought in order to modify it further, never to outright steal content, but I'm gonna keep my distance until we get some clarity on exactly what's going on here.

Hopefully it's just a cruel joke by the viewer author, if such a thing is possible, because "Linden Lab is watching you" doesn't sound terribly official.