As Microsoft kicked off the free rollout of Windows 10 to millions of qualified Windows 7 and Windows 8/8.1 users.
Some hackers have decided to take advantage of eager Windows 7/8/8.1 users who are waiting for the Windows 10 upgrade by sending out fake email notifications to unsuspecting users prompting them to download a file (attached to the email) to upgrade to Windows 10, when in fact it doesn't, the file is actually a virus which locks the contents on your PC/Laptop and demands to pay a ransom in order for them to unlock your PC.
This kind of virus is actually called a ransomware and if you download the file this is what you will get...
So beware this email, Microsoft will NEVER send you an email with an attachment for you to download.
Please spread the word.