Following the example of Google, Facebook, Yahoo and DropBox, Twitter is reportedly ready to roll out a two factor sign in process for its millions of users.

A report in Ars Technica notes a job listing posted by Twitter this week seeking software engineers to develop "user-facing security features, such as multifactor authentication and fraudulent login detection." This comes after the February 1 report of an attack against Twitter authentication in which some 250,000 passwords were stolen.

No details are yet available for Twitter’s two factor process but rumours are that it is likely to feature the same sign on plus unique code sent to a mobile phone that is available for Google’s widely used email system.  There is no indication as to when the rollout will begin but Twitter has been under pressure to improve authentication for some time (see this TechCrunch story from last November).