How to stop Win7 webpage from turning on the camera and microphone?

When we are on the Internet, personal information privacy is of the utmost importance. Recently, there are feedback from Win7 users. After opening a webpage, the local camera and microphone will be automatically turned on, which may cause privacy leakage and leave a security risk. So is there any way to prevent Win7 pages from automatically turning on the local camera and microphone? The following specific methods of operation please see:

1, click [start] & rarr; click Control Panel];

2, click [Flash Player];
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3. In the [Camera and Microphone Settings] tab, select [When the site wants to use the camera or microphone].

These are the methods of operation to stop Win7 web camera and microphone opening on their own, in order to protect the privacy of computer security, you may wish to set it.