While none of this may be a huge problem for the average individual user, it should be a stark warning for corporations, he says. "The public cloud is already so far away from what a good IT department would want."
Most companies have a clear policy that says anyone who shares sensitive documents outside of the security perimeter will be fired. But so many employees, including some CEOs, are doing it, the policy is rarely enforced.
This, he says, will eventually lead to disaster. "If you're working for a large bank, you could go to prison for it. Even if none of that information leaked out, the fact that you're putting it into the public cloud is enough to put you in jail."
Why aren't more corporations concerned about it? "One company is eventually going to get sued," Triantos says, "and then everybody is going to go to firefighting mode. It may not be at the top of people's minds until then."
The bottom line for enterprises, he says, is that it doesn't really matter if it is Google Drive or any of its competitors. They are not private and they are not secure. So, don't use them, Triantos says.
Read more about cloud security in CSOonline's Cloud Security section.