“The e-mail seems preposterous on its face, but the fact it appeared to come from a legal executive at the company — and at a time that Coca-Cola was pushing energy-saving measures — led Etchells to open it and click on a link that purported to lead to a message from the chief executive officer, according to the report. That kicked off a chain reaction that allowed the hackers to burrow into Coca-Cola’s network, seeking specific information about a major upcoming acquisition of a Chinese firm, a deal that later fell apart.”
Source:How a Coca-Cola Exec Fell for a Hacker’s E-mail Trick – Bloomberg