John McCool, senior vice president and general manager, data center, switching and services group, Cisco.
Virtualization, in computing, is the creation of a virtual (rather than actual) version of something, such as a hardware platform, operating system, a storage device or network resources.....
Most of these attacks have utilized vulnerabilities that have been published in reusable third-party components utilized by websites, such as shopping cart software and poor design of such websites. Other factor is user awareness of security vulnerabilities.
VPN is a technology which is making secure private network through the public accessible network infrastructure. Virtual Private Network represent by the short name VPN. ...
The cloud computing : is based on this three concepts. IaaS (Infrastructure as a service), PaaS (Platform as a Service) and SaaS (Software as a Service).