Remember when FBI's director James Comey was spotted using a piece of tape over the camera on his laptop ? At the time, Comey noted that he started doing it after he saw a person "smarter" than him do it as well. Facebook CEO Mark Zuckerberg apparently also puts a tape over his webcam . Zuckerberg posted an image on Facebook yesterday, celebrating Instagram's big milestone of hitting 500 million monthly active users . In the background, we can see that his laptop has a tape over the webcam, as well as something around the microphone port. From a report on The Guardian:On an unrelated note, it appears, Zuckerberg uses Mozilla's Thunderbird as his primary email client.