US Energy Secretary Rick Perry, who is in charge of securing the country's nuclear arsenal, fell for an old Instagram chain hoax on Tuesday.

Usher, Megan Rapinoe, and Julia Roberts were also among a bunch of famous names to fall for it.

They reposted the same clumsily worded "legal" message about Instagram making all of its users' photos and messages public — a rehash of a hoax that dates back to at least 2012.

"If you're seeing a meme claiming Instagram is changing its rules tomorrow, it's not true," said Adam Mosseri, the head of Instagram.

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An Instagram chain hoax that spread like wildfire Tuesday has caught a bunch of famous names — including one of President Donald Trump's Cabinet officials.

The chain meme features a clumsilyworded "legal" message warning of a new Instagram privacy policy in which the social network will make public all of its users' photos and messages.

The message appears to be a rehash of a Facebook hoax that dates back to at least 2012, when a nearly identical warning went viral on the social network. The same message also spread in 2016.

Read more: Facebook's humbling deal with the FTC is the biggest assault on Mark Zuckerberg's power in the firm's history

Instagram won't be making anyone's messages public, but that did not stop the likes of Usher, Megan Rapinoe, Julia Roberts, and Scooter Braun from sharing the message to their millions of followers. Many have since deleted the hoax.

The incoming New York Times tech reporter Taylor Lorenz named and shamed a