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UPDATED: Just days after Microsoft disclosed four zero-day flaws in Microsoft Exchange email servers, attackers are going on a wide hunt for vulnerable machines, some security experts say.
Steven Adair, CEO and founder of the firm Volexity, which first reported the vulnerabilities, says that over the past few days, the Chinese hacking group accused of initially exploiting the flaws has shifted into high gear, stepping up attacks on any vulnerable, unpatched Exchange servers worldwide.
At least 30,000 organizations across the United States are infected, and the attackers now have control over “hundreds of thousands” of Microsoft Exchange Servers worldwide, reports KrebsOnSecurity, citing unnamed U.S. national security advisers.