Microsoft warns old Windows 8
If you are running Windows 8.0, you now have to update to Windows 8.1 Update (released in April), will be protected from attack.
This is because there are a large security update coming Tuesday next week, an update that includes a hotfix from a serious hole in Internet Explorer.
Seven updates total
In total it consists of seven security updates, including the Office and Lync.
You also have to download the update to 8.1 for at all to receive future updates.