From the Mozilla add-on page:

NewsCorp agents in multiple countries have been arrested for hacking into the phones and computers of at least thousands of innocent people. Since the Murdoch family controls 100+ high-traffic domains, it is difficult for average users to know which sites could potentially place them at risk.

MurdochAlert identifies the domains that may place users at risk for Murdoch-related hacking. MurdochAlert shows a bottom warning box whenever you visit a Murdoch-controlled sited.

For me, this is more of a helpful reminder then it is a safety warning. I don’t know of any Murdoch-owned website I regularly visit, but if he owns something I’m not aware of, this is kind of nice to have. In fact, why isn’t there a program that simply tells people which multinational owns the news website they’re reading at any given time? Or is there? Seems like something that should happen, but I don’t how to write code at all.

(h/t Gawker via BJ)