> a [...] ruby gem was hijacked and used to infect production webservers with malware
I wasn't aware of any reports of this being exploited in production. Do you have an example?
I agree with the rest of your comment about the need for more active measures on the part of Rubygems.org and the likelihood that other gems -- especially infrequently used, semi-abandoned ones like this -- have been hijacked without anyone detecting.
no, I don't have any examples, but then, it's not likely we're going to hear of any - anyone affected is probably unaware (until now, maybe). I guess some might come out of the woodwork now.
But again, Rubygems should have data on who downloaded this version of this gem, and so should be able to warn them, and even publish that data so we know not to visit their sites until they acknowledge and fix.