BUFFETT: This is 'the number one problem with mankind'
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"I'm very pessimistic on weapons of mass destruction generally although I don't think that nuclear probably is quite as likely as either primarily biological and maybe cyber," Buffett said during Berkshire Hathaway's annual shareholders' meeting on Saturday.
"I don't know that much about cyber, but I do think that's the number one problem with mankind."
Last year, Buffett said CNBC - cyber, nuclear, biological and chemical attacks - posed a major threat to the economic well-being of Berkshire shareholders.
In 2015, Berkshire made a bet that could profit from increased cyber breaches. Berkshire Hathaway Specialty Insurance launched two insurance policies that cover cyber liability and the costs incurred to respond to a data breach or threat.
Similarly, AIG launched a product earlier this year that covers expenses arising from online bullying and extortion, according to Fortune.
Buffett's remarks came a day after thousands of documents were released online targeting French presidential candidate Emmanuel Macron, before the second round of voting on Sunday. The incident brought flashbacks of the hack into Hillary Clinton campaign chairman John Podesta's emails before last year's election.