Windows 8: Built-in Antivirus Protection?

 So now that Microsoft has released a lot of information on Windows 8 lets take a look at one of the new Computer Security Features. One of the new security features is built-in antivirus protection. Yes that is right Windows Defender (as it is being called in the current builds) has the full protection of MSE now. So what will this mean? Lets take a look at the possibility's:

 First this will mean we will have a lot of users using one antivirus program. The will make malware writers set their targets upon Windows Defender/MSE more and they will most likely test their "malware" more to make sure it bypasses them. I have already seen malware that disables Windows Defender and sometimes MSE so I think we will be seeing a lot more of it.

 This also leads to the question what will Vendors do? We know before when Microsoft started pushing MSE through Windows Update many vendors were not happy that Microsoft was not giving the user the ability to chose from all antivirus products. So how will the vendors react this time? We will just have to wait and see how they react. Once a good amount of vendors comment/respond to this change I will do a roundup of how everyone responded.