I-Sight Camera Hacked? Possible?

With the virtues of the security-complex of the Mac and all its wondrous integrity aside, I was watching a show last night (Covert Affairs on USA Network) and my i-sight camera light came on. I quickly put my thumb over it, and as soon as I did that, it made a click sound and turned off. A window about 200-300? pixels came over my streaming video and had no text inside it then disappeared when the i-sight camera turned off. It was a matter of seconds from when I seen the green light turned off to placing my thumb over it and it turning off. I looked into possibilities of how the i-sight camera could be overridden.

I should mention I have a year old Macbook pro and have never encountered an issue like this. I am incredibly happy after 10+ years using Windows to have switched over to Mac after seeing the light.

One possible explanation is that it was software-related and no one was in fact trying to see me. Interestingly enough, system preferences > flash player - by default sets all settings to allow by recommendation from the user access to the camera and microphone. I have changed all settings - Storage, Camera and Mic, Playback - to "block all sites." You can open a list in which shows what sites have requested to use the Camera and Mic. I provided a list below. After deleting the lists and blocking everything last night, admin.brightcove.com is back on my list "blocked" from access this morning. I also changed the Mic input volumes to zero since I don't use it regularly.

I should mention that I do not visit potentially damaging websites like porn or sites that may be saturated with ticks that I could potentially pick up. My computer is solely for information consumption and academic purposes. However, a couple days ago, I downloaded over 100 PDF documents from the CIA's public archive pertaining to Soviet foreign policy. Maybe I ****** them off?

I'm just putting my incident out there for the record on this awesome forum.

Did you buy the Mac used? I don't have any such software, but I think security "recovery" software takes random photos like that.

I bought it new. Within system preferences, the subsection "other" has a flash player icon. It is there that records which sites have tried to use the camera and mic. In the past 20 or so hours these are the websites that have attempted to use the camera and mic in the picture attached. Some sites of which I concur that I have visited in the past 20 or so hours. Again, perhaps its software related or so I think rather than "someone" trying to gain access specifically to my computer. I put a sticky note on the camera while keeping the green light visible. My friend was saying how flash player has a few vulnerabilities on the mac in exposing user-level information rather than core-level info. I'm not an expert on flash player's security integrity especially on the mac.