Antivirus companies are increasingly advertising the cloud-based capabilities of their products, telling us that 'the speed of cloud computing to deliver real-time protection' is the next big step in your protection. Yes, in some sense 'the cloud' improves the effectiveness of your antivirus program. A novel way of interaction is now possible between your antivirus program and the servers of the antivirus company. But this communication between your program and their servers could turn into a real problem for the privacy of the data on your computer.
The question therefore is: which is more important? Do you consider a little improvement in your antivirus database more important than the potential loss of important data?
Imagine Windows Defender could send some important and confidential files or applications to their servers and then their analysts would read or even use these files.
And yes, Windows Defender, does have that particular feature. If the program encounters an unknown program during its regular scan, it asks the user permission to send it to the servers of Microsoft for further analysis. At first glance, this feature seems harmless enough, but 'the cloud' is not a safe place to be in. It is prone to malware itself, because if Windows Defender can access your file, any malware can use the same method. If your computer got some important files we really recommend you to apply the following steps to fix this issue. Windows Defender is certainly not the only antivirus program that uses such methods. Most modern antivirus programs send samples to their servers for further analysis. We shall not detail all of them in this article but we recommend you to search in the settings of your antivirus software for something like 'Cloud Scanning', 'Submit Samples', etc. and disable these settings immediately.
we could not add this feature to our Privacy Tweaker since Microsoft protect the settings of Windows Defender for API usage which sounds fair.