See the full article for more on the sequence of events in the Google security system infiltration
The intruders do not appear to have stolen passwords of Gmail users, and the company quickly started making significant changes to the security of its networks after the intrusions. But the theft leaves open the possibility, however faint, that the intruders may find weaknesses that Google might not even be aware of, independent computer experts said.
The new details seem likely to increase the debate about the security and privacy of vast computing systems such as Google’s that now centralize the personal information of millions of individuals and businesses. Because vast amounts of digital information are stored in a cluster of computers, popularly referred to as “cloud” computing, a single breach can lead to disastrous losses.