The San Francisco Giants baseball team has used Data Domain's technology for two years to back up its corporate files.
Technology has changed the volume of information spies can purloin from corporate files, as well as the types of attacks possible from a distance.
Corporate files often include details of when and where the company was incorporated, the name of the company's legal representative and a list of major shareholders.
Last weekend, the two schools strongly denied any knowledge of the attacks, which singled out corporate files and the e-mail accounts of human rights activists.
Streaming out of the machine came computer screen printouts with confidential corporate files, including Mr. Bloomberg's employee photograph, his computer password and his personal credit card numbers.
Unbeknown to their employers at closely guarded organizations like Apple, Johnson & Johnson and NASA, employees increasingly use Dropbox and Google Docs to store corporate files — a reality that has helped Dropbox accumulate some 50 million users.
