The hack on accounting giant Deloitte, which compromised a server that stored the email addresses of about 350 clients, may have also jeopardized emails of four U.S. government departments, the United Nations and some of the world's biggest multinational corporations, according to The Guardian.
The company originally reported the incident, which was discovered in March and had been ongoing since October or November 2016, impacted only six clients.
Anonymous sources told The Guardian that Deloitte red-flagged and is reviewing a number of emails and attachments that may have been compromised from the U.S. departments of state, energy, homeland security and defense, the U.S. Postal Service, the National Institutes of Health, and Fannie Mae and Freddie Mac.
According to The Guardian, hackers potentially accessed client usernames, passwords, IP addresses, architectural diagrams for businesses and health information.
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