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Warren Buffett's Berkshire Hathaway has been accused of exposing sensitive user data through flaws in its real estate app, Berkshire Hathaway HomeServices Home Search.

Mobile security firm NowSecure identified the flaws, which left information including phone numbers and email addresses vulnerable to attack.

Berkshire Hathaway told Business Insider that NowSecure tested an old version of the app and "critical vulnerabilities" have been fixed in the updated version.

Warren Buffett's Berkshire Hathaway has been accused of unwittingly exposing the personal information people using its real estate app.

Chicago-based mobile security firm NowSecure discovered vulnerabilities in the Berkshire Hathaway HomeServices Home Search app, as part of an investigation into the security of hundreds of apps on Google's Play Store.

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