While posing for a photo to mark 500 million Instagram users, Facebook founder Mark Zuckerberg inadvertently showed off a couple of security measures he takes.
Upon close inspection, the photos reveal he has placed layers of tape over his computer’s camera and microphone.
This is a widely recommended move by security experts. Even the head of the FBI does it.
"This is basic security awareness and security appreciation," said online security expert Robert Siciliano in an interview with ABC News. "Unfortunately there are many remote access Trojan viruses that can activate and enable a user's webcam without their knowledge. That same webcam can also pick up room ambient sounds."
Zuckerberg was recently a victim of hackers, who breached his Twitter and Pinterest accounts.
Facebook purchased the popular photo sharing service in 2012 for a reported price tag of $1 billion.