Regarding mobility and security, public sector is facing the same challenges as the private sector. Employees working only at the office is not any more the rule, and IT have to deal with mobile laptops or smartphone they do not fully manage.
Consequently, employee mobile device poses at least the same IT security risks as in the private sector, and even more if you take into account the critical missions public servant have to deal with, and the most personal information they manage: taxes, health, law and order, none of this information can be leaked, and represent a threat not only to privacy, but to homeland and personal security as well.