Two problems with this: 1. Many important contributors, especially in security, prefer to be pseudonymous for good reasons. Insisting on identity drives them a

Two problems with this: 1. Many important contributors, especially in security, prefer to be pseudonymous for good reasons. Insisting on identity drives them away. 2. If a spy agency was behind this, as many people have speculated, those can all manufacture "real" identities anyway. So you'd be excluding helpful people and not excluding the attackers.