I haven't really been following this but there have been rumblings all week that a hacked firmware was released that allowed anyone who installed it, and twiddled with some other things, access to the PSN development and testing network. Anyone know more?
I personally don't know any more, but this might be a good starting point if you're interested: http://news.ycombinator.com/item?id=2482679 is a link to a post on reddit from a moderator of a forum that deals in ps3 modding. He outlines the situation, and his forum probably has some more information.