There has been a great deal of churn on the Twitter DNS redirect.
From The Register:
However, security experts involved in maintaining the site said Twitter’s own login credentials were used in the attack. Tom Daly, chief technology officer at Dyn told Wired that attackers used a “set of valid Twitter credentials†to change DNS setting and redirect surfers.
The previously unknown group who carried out the attack wrote a message criticising US “interference” in recent Iranian elections, republished by TechCrunch here.
Is it still a hack if they have the passwords? Yeah, I didn’t think so either.