An X user posted that consumers’ WhatsApp data is "analysed and used for targeted advertising, making users the product, not the customer".

Elon Musk replied that "WhatsApp exports your user data every night". "Some people still think it is secure," according to the tech billionaire.

Meta or WhatsApp were yet to comment on Elon Musk’s allegation.

John Carmack, a computer programmer and video game developer, responded to Elon Musk, saying whether there is any evidence that the content of messages is ever scanned or transmitted.

"I assume usage patterns and routing metadata is collected, and if you invoke a bot in a conversation you are obviously opening it up, but I am still under the impression that the message contents are secure by default," John Carmack posted on Musk’s social media platfrom.

The X owner has attacked Mark Zuckerberg-run Meta Platform in the past too.

Earlier this month, the billionaire claimed that Meta is super greedy at taking credit for advertisers who run campaigns on its platform.

The rivalry between Elon Musk and Mark Zuckerberg is well known.

They were apparently set for a "cage fight' some time back - dubbed as the fight of the century. However, the showdown between the tech leaders never happened.

Musk’s tweet comes amidst ongoing concerns about data privacy on Meta’s platforms. The company was recently hit with a $37 million fine for its data-sharing practices.

Moreover, Meta’s platforms, including Facebook, Instagram, and WhatsApp, experienced a widespread outage in March, raising further questions about the company’s reliability.

In April, Musk mocked Meta after the outage, suggesting that the company was “distracted selling their user’s data.” His latest tweet about WhatsApp seems to reinforce his ongoing concerns about Meta’s handling of user data.