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Due to Data Breach

Mark Zuckerberg’s Phone Number Accidentally Released

Mark Zuckerberg in Profile
An error on Instagram temporarily exposed users' contact information. Photo: Getty Images
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June 12, 2026, 6:05 am | Read time: 2 minutes

Instagram temporarily exposed sensitive user contact information due to a software glitch. Through the password reset function, full email addresses and phone numbers were displayed. Apparently, well-known personalities were also affected.

Incident in Password Recovery

The error occurred in Instagram’s password recovery. Users who entered a username there could fully view the contact information associated with an account. Normally, the platform protects this data by obscuring large portions of the information. However, this protective function temporarily failed.

As a result, the complete contact details appeared in the overview of available recovery options. The usual obscuring of email addresses and phone numbers was absent.

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Prominent Accounts Affected

According to the online magazine “Hackread,” Meta CEO Mark Zuckerberg was among those affected. Screenshots of the security flaw quickly spread on social media on June 6, 2026. Several posts included the login page of Zuckerberg as well as his visible email address and phone number.

Additional attention was drawn by a report from the security channel “International Cyber Digest.” According to this, the vulnerability also revealed a TikTok account that can now apparently be attributed to Kylian Mbappé, which was not previously clearly associated with him.

Initial investigations suggest a logic error in the programming was the cause. There are currently no indications of a hacker attack on Meta’s servers. The company stated that the vulnerability was fixed within a few hours. Meta also reported that there was no system-wide data leak.

Possible Consequences for Users

Despite the company’s quick response, uncertainty remains. As of now, it cannot be ruled out that the security flaw also allowed access to private users’ contact information.

Also of interest: Court establishes new advertising rules for Instagram

How many people were actually affected is not clear from the available information. However, it is certain that the faulty password recovery temporarily made sensitive data visible, drawing attention far beyond the affected celebrity accounts.

This article is a machine translation of the original German version of TECHBOOK and has been reviewed for accuracy and quality by a native speaker. For feedback, please contact us at info@techbook.de.

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