A FRENCH computer hacker is thought to have tapped into Twitter's internal system, gaining access to millions of accounts including that of US President Barack Obama. The hacker, under the name "Hacker Croll", posted a series of screenshots showing him viewing internal website settings and the private details of user accounts. The screenshots show Croll looking at the behind-the-scenes details for the account of US President Barack Obama, including the IP address of the last person to use it. Twitter co-founder Biz Stone confirmed unauthorised access was gained by an outside party during the week, but said only 10 individual...