A new vulnerability has been discovered in Microsoft Internet Explorer. This vulnerability is rated as critical and allows any systems using this browser to be compromised. Because Windows XP support ended on 8th April 2013 it is expected Microsoft will not provide a fix for this problem.  Microsoft have yet to provide a fix for this problem, Ultimate IT are providing protection for customers via UTM firewall appliances. It has also suggested Windows XP machines are upgraded or blocked from accessing the internet.