It seems like everyone is rolling out two-factor authentication. Just a few days ago, Microsoft enabled two-step authentication for Microsoft accounts and now reports are surfacing that Twitter is working on a similar system. Google and others have already employed two-factor authentication to much success.
Now is the perfect time for Twitter to enable extra security. There have been many high-profile hacks of Twitter handles, including one of the AP's account yesterday, which resulted in a massive drop in the Dow Jones. Wired reports that Twitter has a two-factor solution built and is putting it under internal testing before releasing it to the public.