of Wisconsin and RSA 
Corporation released a paper describing how a virtual machine could use side 
channel timing information to extract private cryptographic keys being used in 
other virtual machines on the same physical server.  However, in many cases 
an attacker wouldn’t even need to go to such lengths.  If a multitenant cloud 
service database is not properly designed, a flaw in one client’s application 
could allow an attacker access not only to that client’s data, but every other 
client’s data as 