How to prevent remote screen recording or mic activation

Some websites when accessed through Safari trigger the red banner at the top of the screen that indicates screen recording or microphone is active. I have never used or wanted to use screen recording and checked that in Safari’s permissions microphone is set to deny. How can I prevent such sites from recording me without consent. Alternatively, does the red bar (the one with WiFi, time, battery, etc, not an internet tab) indicate something else when using Safari? An example image is attached.