For example, with the Ethernet, network standard packets are echoed to all physical ports and, by scanning all the packets that go past on the network, you can examine the content.

Also, standard tech-niques such as network-based vulnerability scanning are usually forbidden by IaaS providers because, for example, friendly scans can't be distinguished from at-tacker activity.

AppDetectivePro has long set the standard for database vulnerability scanning, assessment and compliance capabilities.