Microsoft alleged that hackers with links to the Chinese government have been conducting cyberattacks against its Exchange email server software.
According to Microsoft, Hafnium tried to steal emails from key businesses and organizations in the US.
Hafnium reportedly used stolen passwords or identity theft to gain access into accounts.
“While Hafnium is based in China, it conducts its operations primarily from leased virtual private servers (VPS) in the US,” said Tom Burt, Corporate Vice President, Customer Security, and Trust at Microsoft.
Microsoft did not say how many companies were attacked and who but they were believed to be infectious disease researchers, law firms, higher education institutions, defense contractors, policy think tanks, and NGOs.
Microsoft announced that it has updated its Exchange products to fix the vulnerabilities that were exploited during the attack and advised users to apply them.
China denied any involvement in the attacks and all associations with the group.
A Chinese foreign ministry spokesperson said it opposed “all forms of cyber attacks and theft” in regards to the attacks on Microsoft.
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