By Aliya Sternstein
"You're mixing different people's data in a cloudlike system. How do you prevent another organization's data that has been trojanized
-- that has been poisoned -- from getting into your data?" said Tom Kellermann, vice president of security awareness at Core Security.
The company sells security testing software to guard IT systems against threats.
"The data, much like a chemical gas leak, could pollute other environments," he added. "It's a petri dish really. If the cloud environment becomes polluted --
by one of the other entities that's storing data there -- how do you manage that risk?"