Facebook founder Mark Zuckberg has let something very revealing — and pretty embarrassing — slip in a photograph he recently posted online.

The photograph appears to show a piece of tape that has been used to cover his MacBook Pro’s webcame and mic, indicating that the tech mastermind has a lot of paranoia about his own privacy, according to a BBC report.

The image went viral online after it was shared to celebrate Instagram reaching 500 million monthly users.

He’s not alone, though. FBI director James Comey has previously admitted he covers his laptop’s webcam out of fear that hackers would spy on him. And the Electronic Frontier Foundation even sells webcam “stickers” for people worried about their webcams being accessed by unauthorized people.

You might be able to blame former National Security Agency contractor Edward Snowden for this paranoia, as his massive leak in recent years indicate widespread spying — not by hackers, but by the U.S. government.

Here’s the statement from Instagram on its 500 million monthly users:

Instagram Today: 500 Million Windows to the World
243 NOTES

JUNE 21, 2016
Today, we’re excited to announce our community has grown to more than 500 million Instagrammers — more than 300 million of whom use Instagram every single day. Our community also continues to become even more global, with more than 80 percent living outside of the United States.

As you’ve captured and shared the moments happening around you, you’ve formed incredibly varied and diverse communities. Whether you’re an illustrator, a sneakerhead or an astronaut on the International Space Station, every photo and video you share helps bring people closer to friends and interests, broadens perspectives and inspires a sense of wonder. You’ve made Instagram a place where the everyday and the epic are always within reach.

Thank you for your creativity, your openness and your passion for sharing your worlds with one another. We can’t wait to see what you create next.