(Bloomberg) — Business Wire, the press-release distribution company at Warren Buffett's Berkshire Hathaway Inc., hired Robert Markel as chief information security officer after allegations in August that an insider-trading ring relied on computer hackers to pilfer media announcements.

Markel joins from airline Virgin America Inc. and will be responsible for overseeing vulnerability management, penetration testing and regulatory compliance, the unit of Omaha, Nebraska- based Berkshire said in a statement Monday.

Cathy Baron Tamraz, the chief executive officer of Business Wire, has been working to assure clients their information is safe after the arrest and indictments this year of alleged members of a hacking ringring suspected of infiltrating computer servers of Business Wire, PRNewswire Association LLC and Marketwired over five years. In August, she announced the hiring of a cyber-security firm to help conduct forensic testing of its systems.

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