I bought and HP laptop about four months ago, so I'm not sure if I've supplied much content from my webcam yet. However, what is wrong with this question?
This question would be reasonable considering that I might vouch that no contributor to this forum can say to me with absolute certainty that there is no way you can absolutely know when your webcam is turned on. So, it has a blue LED that lights up telling you that it is in operation, and so, you think that the BIOS is "secure". What does all this mean? With ever-widening bandwidth, the transmission of motion from one pole of this planet to another in real-time is becoming easier.
Beating (there might be a pun there for some of you) someone up for asking what I think is a fairly reasonable question is just the type of wilful complacency that creates the types of hazard that prompts the question.
If all you can be bothered doing is having a go at the person who asks this question, then why bother living?
Enjoy.