I am getting more emails like this. Are these for real or fake ?

Emails

FROM : Microsoft Corporation Internet Security Center <[email protected]>
TO : "Microsoft Corporation Consumer"@comcast.net <"Microsoft Corporation Consumer"@comcast.net>

SUBJECT: Microsoft Security Update

This message has been processed by Brightmail(r) Anti-Virus using
Symantec's AntiVirus Technology.

update801.exe was infected with the malicious virus W32.Gibe.B@mm and has been deleted because the file cannot be cleaned.


For more information on anti-virus tips and technology, visit
http://www.brightmail.com/antivirus.